40065640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:530

約数の個数: 64

約数和(自身を含む): 94464000

約数和(自身を除く): 54398360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 155, 158, 248, 310, 316, 395, 409, 620, 632, 790, 818, 1240, 1580, 1636, 2045, 2449, 3160, 3272, 4090, 4898, 8180, 9796, 12245, 12679, 16360, 19592, 24490, 25358, 32311, 48980, 50716, 63395, 64622, 97960, 101432, 126790, 129244, 161555, 253580, 258488, 323110, 507160, 646220, 1001641, 1292440, 2003282, 4006564, 5008205, 8013128, 10016410, 20032820, 40065640]

約数ペア:

[(1, 40065640), (2, 20032820), (4, 10016410), (5, 8013128), (8, 5008205), (10, 4006564), (20, 2003282), (31, 1292440), (40, 1001641), (62, 646220), (79, 507160), (124, 323110), (155, 258488), (158, 253580), (248, 161555), (310, 129244), (316, 126790), (395, 101432), (409, 97960), (620, 64622), (632, 63395), (790, 50716), (818, 48980), (1240, 32311), (1580, 25358), (1636, 24490), (2045, 19592), (2449, 16360), (3160, 12679), (3272, 12245), (4090, 9796), (4898, 8180)]