31672420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1997}}^1$

素因数の和:2080

約数の個数: 48

約数和(自身を含む): 72839088

約数和(自身を除く): 41166668

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 1997, 3172, 3965, 3994, 7930, 7988, 9985, 15860, 19970, 25961, 39940, 51922, 103844, 121817, 129805, 243634, 259610, 487268, 519220, 609085, 1218170, 1583621, 2436340, 3167242, 6334484, 7918105, 15836210, 31672420]

約数ペア:

[(1, 31672420), (2, 15836210), (4, 7918105), (5, 6334484), (10, 3167242), (13, 2436340), (20, 1583621), (26, 1218170), (52, 609085), (61, 519220), (65, 487268), (122, 259610), (130, 243634), (244, 129805), (260, 121817), (305, 103844), (610, 51922), (793, 39940), (1220, 25961), (1586, 19970), (1997, 15860), (3172, 9985), (3965, 7988), (3994, 7930)]