400553660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{6971}}^1$

素因数の和:7023

約数の個数: 72

約数和(自身を含む): 964562256

約数和(自身を除く): 564008596

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 260, 338, 340, 442, 676, 845, 884, 1105, 1690, 2210, 2873, 3380, 4420, 5746, 6971, 11492, 13942, 14365, 27884, 28730, 34855, 57460, 69710, 90623, 118507, 139420, 181246, 237014, 362492, 453115, 474028, 592535, 906230, 1178099, 1185070, 1540591, 1812460, 2356198, 2370140, 3081182, 4712396, 5890495, 6162364, 7702955, 11780990, 15405910, 20027683, 23561980, 30811820, 40055366, 80110732, 100138415, 200276830, 400553660]

約数ペア:

[(1, 400553660), (2, 200276830), (4, 100138415), (5, 80110732), (10, 40055366), (13, 30811820), (17, 23561980), (20, 20027683), (26, 15405910), (34, 11780990), (52, 7702955), (65, 6162364), (68, 5890495), (85, 4712396), (130, 3081182), (169, 2370140), (170, 2356198), (221, 1812460), (260, 1540591), (338, 1185070), (340, 1178099), (442, 906230), (676, 592535), (845, 474028), (884, 453115), (1105, 362492), (1690, 237014), (2210, 181246), (2873, 139420), (3380, 118507), (4420, 90623), (5746, 69710), (6971, 57460), (11492, 34855), (13942, 28730), (14365, 27884)]