20986680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1223}}^1$

素因数の和:1261

約数の個数: 128

約数和(自身を含む): 74027520

約数和(自身を除く): 53040840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 20, 22, 24, 26, 30, 33, 39, 40, 44, 52, 55, 60, 65, 66, 78, 88, 104, 110, 120, 130, 132, 143, 156, 165, 195, 220, 260, 264, 286, 312, 330, 390, 429, 440, 520, 572, 660, 715, 780, 858, 1144, 1223, 1320, 1430, 1560, 1716, 2145, 2446, 2860, 3432, 3669, 4290, 4892, 5720, 6115, 7338, 8580, 9784, 12230, 13453, 14676, 15899, 17160, 18345, 24460, 26906, 29352, 31798, 36690, 40359, 47697, 48920, 53812, 63596, 67265, 73380, 79495, 80718, 95394, 107624, 127192, 134530, 146760, 158990, 161436, 174889, 190788, 201795, 238485, 269060, 317980, 322872, 349778, 381576, 403590, 476970, 524667, 538120, 635960, 699556, 807180, 874445, 953940, 1049334, 1399112, 1614360, 1748890, 1907880, 2098668, 2623335, 3497780, 4197336, 5246670, 6995560, 10493340, 20986680]

約数ペア:

[(1, 20986680), (2, 10493340), (3, 6995560), (4, 5246670), (5, 4197336), (6, 3497780), (8, 2623335), (10, 2098668), (11, 1907880), (12, 1748890), (13, 1614360), (15, 1399112), (20, 1049334), (22, 953940), (24, 874445), (26, 807180), (30, 699556), (33, 635960), (39, 538120), (40, 524667), (44, 476970), (52, 403590), (55, 381576), (60, 349778), (65, 322872), (66, 317980), (78, 269060), (88, 238485), (104, 201795), (110, 190788), (120, 174889), (130, 161436), (132, 158990), (143, 146760), (156, 134530), (165, 127192), (195, 107624), (220, 95394), (260, 80718), (264, 79495), (286, 73380), (312, 67265), (330, 63596), (390, 53812), (429, 48920), (440, 47697), (520, 40359), (572, 36690), (660, 31798), (715, 29352), (780, 26906), (858, 24460), (1144, 18345), (1223, 17160), (1320, 15899), (1430, 14676), (1560, 13453), (1716, 12230), (2145, 9784), (2446, 8580), (2860, 7338), (3432, 6115), (3669, 5720), (4290, 4892)]