19992180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1$

素因数の和:134

約数の個数: 144

約数和(自身を含む): 64520064

約数和(自身を除く): 44527884

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 19, 20, 26, 30, 38, 39, 52, 57, 60, 65, 71, 76, 78, 95, 114, 130, 142, 156, 190, 195, 213, 228, 247, 260, 284, 285, 355, 361, 380, 390, 426, 494, 570, 710, 722, 741, 780, 852, 923, 988, 1065, 1083, 1140, 1235, 1349, 1420, 1444, 1482, 1805, 1846, 2130, 2166, 2470, 2698, 2769, 2964, 3610, 3692, 3705, 4047, 4260, 4332, 4615, 4693, 4940, 5396, 5415, 5538, 6745, 7220, 7410, 8094, 9230, 9386, 10830, 11076, 13490, 13845, 14079, 14820, 16188, 17537, 18460, 18772, 20235, 21660, 23465, 25631, 26980, 27690, 28158, 35074, 40470, 46930, 51262, 52611, 55380, 56316, 70148, 70395, 76893, 80940, 87685, 93860, 102524, 105222, 128155, 140790, 153786, 175370, 210444, 256310, 263055, 281580, 307572, 333203, 350740, 384465, 512620, 526110, 666406, 768930, 999609, 1052220, 1332812, 1537860, 1666015, 1999218, 3332030, 3998436, 4998045, 6664060, 9996090, 19992180]

約数ペア:

[(1, 19992180), (2, 9996090), (3, 6664060), (4, 4998045), (5, 3998436), (6, 3332030), (10, 1999218), (12, 1666015), (13, 1537860), (15, 1332812), (19, 1052220), (20, 999609), (26, 768930), (30, 666406), (38, 526110), (39, 512620), (52, 384465), (57, 350740), (60, 333203), (65, 307572), (71, 281580), (76, 263055), (78, 256310), (95, 210444), (114, 175370), (130, 153786), (142, 140790), (156, 128155), (190, 105222), (195, 102524), (213, 93860), (228, 87685), (247, 80940), (260, 76893), (284, 70395), (285, 70148), (355, 56316), (361, 55380), (380, 52611), (390, 51262), (426, 46930), (494, 40470), (570, 35074), (710, 28158), (722, 27690), (741, 26980), (780, 25631), (852, 23465), (923, 21660), (988, 20235), (1065, 18772), (1083, 18460), (1140, 17537), (1235, 16188), (1349, 14820), (1420, 14079), (1444, 13845), (1482, 13490), (1805, 11076), (1846, 10830), (2130, 9386), (2166, 9230), (2470, 8094), (2698, 7410), (2769, 7220), (2964, 6745), (3610, 5538), (3692, 5415), (3705, 5396), (4047, 4940), (4260, 4693), (4332, 4615)]