31457800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:287

約数の個数: 96

約数和(自身を含む): 81244800

約数和(自身を除く): 49787000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 79, 88, 100, 110, 158, 181, 200, 220, 275, 316, 362, 395, 440, 550, 632, 724, 790, 869, 905, 1100, 1448, 1580, 1738, 1810, 1975, 1991, 2200, 3160, 3476, 3620, 3950, 3982, 4345, 4525, 6952, 7240, 7900, 7964, 8690, 9050, 9955, 14299, 15800, 15928, 17380, 18100, 19910, 21725, 28598, 34760, 36200, 39820, 43450, 49775, 57196, 71495, 79640, 86900, 99550, 114392, 142990, 157289, 173800, 199100, 285980, 314578, 357475, 398200, 571960, 629156, 714950, 786445, 1258312, 1429900, 1572890, 2859800, 3145780, 3932225, 6291560, 7864450, 15728900, 31457800]

約数ペア:

[(1, 31457800), (2, 15728900), (4, 7864450), (5, 6291560), (8, 3932225), (10, 3145780), (11, 2859800), (20, 1572890), (22, 1429900), (25, 1258312), (40, 786445), (44, 714950), (50, 629156), (55, 571960), (79, 398200), (88, 357475), (100, 314578), (110, 285980), (158, 199100), (181, 173800), (200, 157289), (220, 142990), (275, 114392), (316, 99550), (362, 86900), (395, 79640), (440, 71495), (550, 57196), (632, 49775), (724, 43450), (790, 39820), (869, 36200), (905, 34760), (1100, 28598), (1448, 21725), (1580, 19910), (1738, 18100), (1810, 17380), (1975, 15928), (1991, 15800), (2200, 14299), (3160, 9955), (3476, 9050), (3620, 8690), (3950, 7964), (3982, 7900), (4345, 7240), (4525, 6952)]