20978160

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12487}}^1$

素因数の和:12510

約数の個数: 80

約数和(自身を含む): 74328576

約数和(自身を除く): 53350416

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12487, 24974, 37461, 49948, 62435, 74922, 87409, 99896, 124870, 149844, 174818, 187305, 199792, 249740, 262227, 299688, 349636, 374610, 437045, 499480, 524454, 599376, 699272, 749220, 874090, 998960, 1048908, 1311135, 1398544, 1498440, 1748180, 2097816, 2622270, 2996880, 3496360, 4195632, 5244540, 6992720, 10489080, 20978160]

約数ペア:

[(1, 20978160), (2, 10489080), (3, 6992720), (4, 5244540), (5, 4195632), (6, 3496360), (7, 2996880), (8, 2622270), (10, 2097816), (12, 1748180), (14, 1498440), (15, 1398544), (16, 1311135), (20, 1048908), (21, 998960), (24, 874090), (28, 749220), (30, 699272), (35, 599376), (40, 524454), (42, 499480), (48, 437045), (56, 374610), (60, 349636), (70, 299688), (80, 262227), (84, 249740), (105, 199792), (112, 187305), (120, 174818), (140, 149844), (168, 124870), (210, 99896), (240, 87409), (280, 74922), (336, 62435), (420, 49948), (560, 37461), (840, 24974), (1680, 12487)]