90796520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{1979}}^1$

素因数の和:2058

約数の個数: 64

約数和(自身を含む): 216691200

約数和(自身を除く): 125894680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 37, 40, 62, 74, 124, 148, 155, 185, 248, 296, 310, 370, 620, 740, 1147, 1240, 1480, 1979, 2294, 3958, 4588, 5735, 7916, 9176, 9895, 11470, 15832, 19790, 22940, 39580, 45880, 61349, 73223, 79160, 122698, 146446, 245396, 292892, 306745, 366115, 490792, 585784, 613490, 732230, 1226980, 1464460, 2269913, 2453960, 2928920, 4539826, 9079652, 11349565, 18159304, 22699130, 45398260, 90796520]

約数ペア:

[(1, 90796520), (2, 45398260), (4, 22699130), (5, 18159304), (8, 11349565), (10, 9079652), (20, 4539826), (31, 2928920), (37, 2453960), (40, 2269913), (62, 1464460), (74, 1226980), (124, 732230), (148, 613490), (155, 585784), (185, 490792), (248, 366115), (296, 306745), (310, 292892), (370, 245396), (620, 146446), (740, 122698), (1147, 79160), (1240, 73223), (1480, 61349), (1979, 45880), (2294, 39580), (3958, 22940), (4588, 19790), (5735, 15832), (7916, 11470), (9176, 9895)]