81123160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{617}}^1$

素因数の和:820

約数の個数: 64

約数和(自身を含む): 193557600

約数和(自身を除く): 112434440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 173, 190, 346, 380, 617, 692, 760, 865, 1234, 1384, 1730, 2468, 3085, 3287, 3460, 4936, 6170, 6574, 6920, 11723, 12340, 13148, 16435, 23446, 24680, 26296, 32870, 46892, 58615, 65740, 93784, 106741, 117230, 131480, 213482, 234460, 426964, 468920, 533705, 853928, 1067410, 2028079, 2134820, 4056158, 4269640, 8112316, 10140395, 16224632, 20280790, 40561580, 81123160]

約数ペア:

[(1, 81123160), (2, 40561580), (4, 20280790), (5, 16224632), (8, 10140395), (10, 8112316), (19, 4269640), (20, 4056158), (38, 2134820), (40, 2028079), (76, 1067410), (95, 853928), (152, 533705), (173, 468920), (190, 426964), (346, 234460), (380, 213482), (617, 131480), (692, 117230), (760, 106741), (865, 93784), (1234, 65740), (1384, 58615), (1730, 46892), (2468, 32870), (3085, 26296), (3287, 24680), (3460, 23446), (4936, 16435), (6170, 13148), (6574, 12340), (6920, 11723)]