18038680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3727}}^1$

素因数の和:3760

約数の個数: 48

約数和(自身を含む): 44624160

約数和(自身を除く): 26585480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 3727, 4840, 7454, 14908, 18635, 29816, 37270, 40997, 74540, 81994, 149080, 163988, 204985, 327976, 409970, 450967, 819940, 901934, 1639880, 1803868, 2254835, 3607736, 4509670, 9019340, 18038680]

約数ペア:

[(1, 18038680), (2, 9019340), (4, 4509670), (5, 3607736), (8, 2254835), (10, 1803868), (11, 1639880), (20, 901934), (22, 819940), (40, 450967), (44, 409970), (55, 327976), (88, 204985), (110, 163988), (121, 149080), (220, 81994), (242, 74540), (440, 40997), (484, 37270), (605, 29816), (968, 18635), (1210, 14908), (2420, 7454), (3727, 4840)]