18197920

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{673}}^1$

素因数の和:714

約数の個数: 72

約数和(自身を含む): 46623276

約数和(自身を除く): 28425356

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 169, 208, 260, 338, 416, 520, 673, 676, 845, 1040, 1346, 1352, 1690, 2080, 2692, 2704, 3365, 3380, 5384, 5408, 6730, 6760, 8749, 10768, 13460, 13520, 17498, 21536, 26920, 27040, 34996, 43745, 53840, 69992, 87490, 107680, 113737, 139984, 174980, 227474, 279968, 349960, 454948, 568685, 699920, 909896, 1137370, 1399840, 1819792, 2274740, 3639584, 4549480, 9098960, 18197920]

約数ペア:

[(1, 18197920), (2, 9098960), (4, 4549480), (5, 3639584), (8, 2274740), (10, 1819792), (13, 1399840), (16, 1137370), (20, 909896), (26, 699920), (32, 568685), (40, 454948), (52, 349960), (65, 279968), (80, 227474), (104, 174980), (130, 139984), (160, 113737), (169, 107680), (208, 87490), (260, 69992), (338, 53840), (416, 43745), (520, 34996), (673, 27040), (676, 26920), (845, 21536), (1040, 17498), (1346, 13520), (1352, 13460), (1690, 10768), (2080, 8749), (2692, 6760), (2704, 6730), (3365, 5408), (3380, 5384)]