71291920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2087}}^1$

素因数の和:2168

約数の個数: 80

約数和(自身を含む): 192630528

約数和(自身を除く): 121338608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1708, 2087, 2135, 2440, 3416, 4174, 4270, 4880, 6832, 8348, 8540, 10435, 14609, 16696, 17080, 20870, 29218, 33392, 34160, 41740, 58436, 73045, 83480, 116872, 127307, 146090, 166960, 233744, 254614, 292180, 509228, 584360, 636535, 891149, 1018456, 1168720, 1273070, 1782298, 2036912, 2546140, 3564596, 4455745, 5092280, 7129192, 8911490, 10184560, 14258384, 17822980, 35645960, 71291920]

約数ペア:

[(1, 71291920), (2, 35645960), (4, 17822980), (5, 14258384), (7, 10184560), (8, 8911490), (10, 7129192), (14, 5092280), (16, 4455745), (20, 3564596), (28, 2546140), (35, 2036912), (40, 1782298), (56, 1273070), (61, 1168720), (70, 1018456), (80, 891149), (112, 636535), (122, 584360), (140, 509228), (244, 292180), (280, 254614), (305, 233744), (427, 166960), (488, 146090), (560, 127307), (610, 116872), (854, 83480), (976, 73045), (1220, 58436), (1708, 41740), (2087, 34160), (2135, 33392), (2440, 29218), (3416, 20870), (4174, 17080), (4270, 16696), (4880, 14609), (6832, 10435), (8348, 8540)]