81010980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4129}}^1$

素因数の和:4253

約数の個数: 72

約数和(自身を含む): 248047800

約数和(自身を除く): 167036820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1090, 1308, 1635, 1962, 2180, 3270, 3924, 4129, 4905, 6540, 8258, 9810, 12387, 16516, 19620, 20645, 24774, 37161, 41290, 49548, 61935, 74322, 82580, 123870, 148644, 185805, 247740, 371610, 450061, 743220, 900122, 1350183, 1800244, 2250305, 2700366, 4050549, 4500610, 5400732, 6750915, 8101098, 9001220, 13501830, 16202196, 20252745, 27003660, 40505490, 81010980]

約数ペア:

[(1, 81010980), (2, 40505490), (3, 27003660), (4, 20252745), (5, 16202196), (6, 13501830), (9, 9001220), (10, 8101098), (12, 6750915), (15, 5400732), (18, 4500610), (20, 4050549), (30, 2700366), (36, 2250305), (45, 1800244), (60, 1350183), (90, 900122), (109, 743220), (180, 450061), (218, 371610), (327, 247740), (436, 185805), (545, 148644), (654, 123870), (981, 82580), (1090, 74322), (1308, 61935), (1635, 49548), (1962, 41290), (2180, 37161), (3270, 24774), (3924, 20645), (4129, 19620), (4905, 16516), (6540, 12387), (8258, 9810)]