209210840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{359}}^1\times {\mathrm{857}}^1$

素因数の和:1244

約数の個数: 64

約数和(自身を含む): 500385600

約数和(自身を除く): 291174760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 359, 680, 718, 857, 1436, 1714, 1795, 2872, 3428, 3590, 4285, 6103, 6856, 7180, 8570, 12206, 14360, 14569, 17140, 24412, 29138, 30515, 34280, 48824, 58276, 61030, 72845, 116552, 122060, 145690, 244120, 291380, 307663, 582760, 615326, 1230652, 1538315, 2461304, 3076630, 5230271, 6153260, 10460542, 12306520, 20921084, 26151355, 41842168, 52302710, 104605420, 209210840]

約数ペア:

[(1, 209210840), (2, 104605420), (4, 52302710), (5, 41842168), (8, 26151355), (10, 20921084), (17, 12306520), (20, 10460542), (34, 6153260), (40, 5230271), (68, 3076630), (85, 2461304), (136, 1538315), (170, 1230652), (340, 615326), (359, 582760), (680, 307663), (718, 291380), (857, 244120), (1436, 145690), (1714, 122060), (1795, 116552), (2872, 72845), (3428, 61030), (3590, 58276), (4285, 48824), (6103, 34280), (6856, 30515), (7180, 29138), (8570, 24412), (12206, 17140), (14360, 14569)]