406640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1$

素因数の和:66

約数の個数: 80

約数和(自身を含む): 1124928

約数和(自身を除く): 718288

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 23, 26, 34, 40, 46, 52, 65, 68, 80, 85, 92, 104, 115, 130, 136, 170, 184, 208, 221, 230, 260, 272, 299, 340, 368, 391, 442, 460, 520, 598, 680, 782, 884, 920, 1040, 1105, 1196, 1360, 1495, 1564, 1768, 1840, 1955, 2210, 2392, 2990, 3128, 3536, 3910, 4420, 4784, 5083, 5980, 6256, 7820, 8840, 10166, 11960, 15640, 17680, 20332, 23920, 25415, 31280, 40664, 50830, 81328, 101660, 203320, 406640]

約数ペア:

[(1, 406640), (2, 203320), (4, 101660), (5, 81328), (8, 50830), (10, 40664), (13, 31280), (16, 25415), (17, 23920), (20, 20332), (23, 17680), (26, 15640), (34, 11960), (40, 10166), (46, 8840), (52, 7820), (65, 6256), (68, 5980), (80, 5083), (85, 4784), (92, 4420), (104, 3910), (115, 3536), (130, 3128), (136, 2990), (170, 2392), (184, 2210), (208, 1955), (221, 1840), (230, 1768), (260, 1564), (272, 1495), (299, 1360), (340, 1196), (368, 1105), (391, 1040), (442, 920), (460, 884), (520, 782), (598, 680)]