664873340

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{787}}^1\times {\mathrm{797}}^1$

素因数の和:1646

約数の個数: 48

約数和(自身を含む): 1426172832

約数和(自身を除く): 761299492

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 787, 797, 1060, 1574, 1594, 3148, 3188, 3935, 3985, 7870, 7970, 15740, 15940, 41711, 42241, 83422, 84482, 166844, 168964, 208555, 211205, 417110, 422410, 627239, 834220, 844820, 1254478, 2508956, 3136195, 6272390, 12544780, 33243667, 66487334, 132974668, 166218335, 332436670, 664873340]

約数ペア:

[(1, 664873340), (2, 332436670), (4, 166218335), (5, 132974668), (10, 66487334), (20, 33243667), (53, 12544780), (106, 6272390), (212, 3136195), (265, 2508956), (530, 1254478), (787, 844820), (797, 834220), (1060, 627239), (1574, 422410), (1594, 417110), (3148, 211205), (3188, 208555), (3935, 168964), (3985, 166844), (7870, 84482), (7970, 83422), (15740, 42241), (15940, 41711)]