1640904400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{132331}}^1$

素因数の和:132380

約数の個数: 60

約数和(自身を含む): 4069473664

約数和(自身を除く): 2428569264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 12400, 132331, 264662, 529324, 661655, 1058648, 1323310, 2117296, 2646620, 3308275, 4102261, 5293240, 6616550, 8204522, 10586480, 13233100, 16409044, 20511305, 26466200, 32818088, 41022610, 52932400, 65636176, 82045220, 102556525, 164090440, 205113050, 328180880, 410226100, 820452200, 1640904400]

約数ペア:

[(1, 1640904400), (2, 820452200), (4, 410226100), (5, 328180880), (8, 205113050), (10, 164090440), (16, 102556525), (20, 82045220), (25, 65636176), (31, 52932400), (40, 41022610), (50, 32818088), (62, 26466200), (80, 20511305), (100, 16409044), (124, 13233100), (155, 10586480), (200, 8204522), (248, 6616550), (310, 5293240), (400, 4102261), (496, 3308275), (620, 2646620), (775, 2117296), (1240, 1323310), (1550, 1058648), (2480, 661655), (3100, 529324), (6200, 264662), (12400, 132331)]