21697620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2719}}^1$

素因数の和:2757

約数の個数: 96

約数和(自身を含む): 73113600

約数和(自身を除く): 51415980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 380, 399, 420, 532, 570, 665, 798, 1140, 1330, 1596, 1995, 2660, 2719, 3990, 5438, 7980, 8157, 10876, 13595, 16314, 19033, 27190, 32628, 38066, 40785, 51661, 54380, 57099, 76132, 81570, 95165, 103322, 114198, 154983, 163140, 190330, 206644, 228396, 258305, 285495, 309966, 361627, 380660, 516610, 570990, 619932, 723254, 774915, 1033220, 1084881, 1141980, 1446508, 1549830, 1808135, 2169762, 3099660, 3616270, 4339524, 5424405, 7232540, 10848810, 21697620]

約数ペア:

[(1, 21697620), (2, 10848810), (3, 7232540), (4, 5424405), (5, 4339524), (6, 3616270), (7, 3099660), (10, 2169762), (12, 1808135), (14, 1549830), (15, 1446508), (19, 1141980), (20, 1084881), (21, 1033220), (28, 774915), (30, 723254), (35, 619932), (38, 570990), (42, 516610), (57, 380660), (60, 361627), (70, 309966), (76, 285495), (84, 258305), (95, 228396), (105, 206644), (114, 190330), (133, 163140), (140, 154983), (190, 114198), (210, 103322), (228, 95165), (266, 81570), (285, 76132), (380, 57099), (399, 54380), (420, 51661), (532, 40785), (570, 38066), (665, 32628), (798, 27190), (1140, 19033), (1330, 16314), (1596, 13595), (1995, 10876), (2660, 8157), (2719, 7980), (3990, 5438)]