28672540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{499}}^1$

素因数の和:551

約数の個数: 72

約数和(自身を含む): 69174000

約数和(自身を除く): 40501460

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 260, 338, 340, 442, 499, 676, 845, 884, 998, 1105, 1690, 1996, 2210, 2495, 2873, 3380, 4420, 4990, 5746, 6487, 8483, 9980, 11492, 12974, 14365, 16966, 25948, 28730, 32435, 33932, 42415, 57460, 64870, 84331, 84830, 110279, 129740, 168662, 169660, 220558, 337324, 421655, 441116, 551395, 843310, 1102790, 1433627, 1686620, 2205580, 2867254, 5734508, 7168135, 14336270, 28672540]

約数ペア:

[(1, 28672540), (2, 14336270), (4, 7168135), (5, 5734508), (10, 2867254), (13, 2205580), (17, 1686620), (20, 1433627), (26, 1102790), (34, 843310), (52, 551395), (65, 441116), (68, 421655), (85, 337324), (130, 220558), (169, 169660), (170, 168662), (221, 129740), (260, 110279), (338, 84830), (340, 84331), (442, 64870), (499, 57460), (676, 42415), (845, 33932), (884, 32435), (998, 28730), (1105, 25948), (1690, 16966), (1996, 14365), (2210, 12974), (2495, 11492), (2873, 9980), (3380, 8483), (4420, 6487), (4990, 5746)]