123840040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{99871}}^1$

素因数の和:99913

約数の個数: 32

約数和(自身を含む): 287631360

約数和(自身を除く): 163791320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 99871, 199742, 399484, 499355, 798968, 998710, 1997420, 3096001, 3994840, 6192002, 12384004, 15480005, 24768008, 30960010, 61920020, 123840040]

約数ペア:

[(1, 123840040), (2, 61920020), (4, 30960010), (5, 24768008), (8, 15480005), (10, 12384004), (20, 6192002), (31, 3994840), (40, 3096001), (62, 1997420), (124, 998710), (155, 798968), (248, 499355), (310, 399484), (620, 199742), (1240, 99871)]