81974672

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{1721}}^1$

素因数の和:1971

約数の個数: 40

約数和(自身を含む): 171890040

約数和(自身を除く): 89915368

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 229, 458, 916, 1721, 1832, 2977, 3442, 3664, 5954, 6884, 11908, 13768, 22373, 23816, 27536, 44746, 47632, 89492, 178984, 357968, 394109, 788218, 1576436, 3152872, 5123417, 6305744, 10246834, 20493668, 40987336, 81974672]

約数ペア:

[(1, 81974672), (2, 40987336), (4, 20493668), (8, 10246834), (13, 6305744), (16, 5123417), (26, 3152872), (52, 1576436), (104, 788218), (208, 394109), (229, 357968), (458, 178984), (916, 89492), (1721, 47632), (1832, 44746), (2977, 27536), (3442, 23816), (3664, 22373), (5954, 13768), (6884, 11908)]