20121493420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{2467}}^1$

素因数の和:2672

約数の個数: 192

約数和(自身を含む): 53735270400

約数和(自身を除く): 33613776980

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 23, 28, 34, 35, 46, 68, 70, 85, 92, 115, 119, 140, 149, 161, 170, 230, 238, 298, 322, 340, 391, 460, 476, 595, 596, 644, 745, 782, 805, 1043, 1190, 1490, 1564, 1610, 1955, 2086, 2380, 2467, 2533, 2737, 2980, 3220, 3427, 3910, 4172, 4934, 5066, 5215, 5474, 6854, 7820, 9868, 10132, 10430, 10948, 12335, 12665, 13685, 13708, 17135, 17269, 17731, 20860, 23989, 24670, 25330, 27370, 34270, 34538, 35462, 41939, 47978, 49340, 50660, 54740, 56741, 58259, 68540, 69076, 70924, 83878, 86345, 88655, 95956, 113482, 116518, 119945, 167756, 172690, 177310, 209695, 226964, 233036, 239890, 283705, 291295, 293573, 345380, 354620, 367583, 397187, 407813, 419390, 479780, 567410, 582590, 587146, 735166, 794374, 815626, 838780, 964597, 1134820, 1165180, 1174292, 1467865, 1470332, 1588748, 1631252, 1837915, 1929194, 1985935, 2039065, 2573081, 2935730, 3675830, 3858388, 3971870, 4078130, 4822985, 5146162, 5871460, 6248911, 6752179, 7351660, 7943740, 8156260, 8454409, 9645970, 10292324, 12497822, 12865405, 13504358, 16908818, 19291940, 24995644, 25730810, 27008716, 31244555, 33760895, 33817636, 42272045, 43742377, 51461620, 59180863, 62489110, 67521790, 84544090, 87484754, 118361726, 124978220, 135043580, 143724953, 169088180, 174969508, 218711885, 236723452, 287449906, 295904315, 437423770, 574899812, 591808630, 718624765, 874847540, 1006074671, 1183617260, 1437249530, 2012149342, 2874499060, 4024298684, 5030373355, 10060746710, 20121493420]

約数ペア:

[(1, 20121493420), (2, 10060746710), (4, 5030373355), (5, 4024298684), (7, 2874499060), (10, 2012149342), (14, 1437249530), (17, 1183617260), (20, 1006074671), (23, 874847540), (28, 718624765), (34, 591808630), (35, 574899812), (46, 437423770), (68, 295904315), (70, 287449906), (85, 236723452), (92, 218711885), (115, 174969508), (119, 169088180), (140, 143724953), (149, 135043580), (161, 124978220), (170, 118361726), (230, 87484754), (238, 84544090), (298, 67521790), (322, 62489110), (340, 59180863), (391, 51461620), (460, 43742377), (476, 42272045), (595, 33817636), (596, 33760895), (644, 31244555), (745, 27008716), (782, 25730810), (805, 24995644), (1043, 19291940), (1190, 16908818), (1490, 13504358), (1564, 12865405), (1610, 12497822), (1955, 10292324), (2086, 9645970), (2380, 8454409), (2467, 8156260), (2533, 7943740), (2737, 7351660), (2980, 6752179), (3220, 6248911), (3427, 5871460), (3910, 5146162), (4172, 4822985), (4934, 4078130), (5066, 3971870), (5215, 3858388), (5474, 3675830), (6854, 2935730), (7820, 2573081), (9868, 2039065), (10132, 1985935), (10430, 1929194), (10948, 1837915), (12335, 1631252), (12665, 1588748), (13685, 1470332), (13708, 1467865), (17135, 1174292), (17269, 1165180), (17731, 1134820), (20860, 964597), (23989, 838780), (24670, 815626), (25330, 794374), (27370, 735166), (34270, 587146), (34538, 582590), (35462, 567410), (41939, 479780), (47978, 419390), (49340, 407813), (50660, 397187), (54740, 367583), (56741, 354620), (58259, 345380), (68540, 293573), (69076, 291295), (70924, 283705), (83878, 239890), (86345, 233036), (88655, 226964), (95956, 209695), (113482, 177310), (116518, 172690), (119945, 167756)]