11518840

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:272

約数の個数: 64

約数和(自身を含む): 27387360

約数和(自身を除く): 15868520

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 74, 86, 148, 172, 181, 185, 215, 296, 344, 362, 370, 430, 724, 740, 860, 905, 1448, 1480, 1591, 1720, 1810, 3182, 3620, 6364, 6697, 7240, 7783, 7955, 12728, 13394, 15566, 15910, 26788, 31132, 31820, 33485, 38915, 53576, 62264, 63640, 66970, 77830, 133940, 155660, 267880, 287971, 311320, 575942, 1151884, 1439855, 2303768, 2879710, 5759420, 11518840]

約数ペア:

[(1, 11518840), (2, 5759420), (4, 2879710), (5, 2303768), (8, 1439855), (10, 1151884), (20, 575942), (37, 311320), (40, 287971), (43, 267880), (74, 155660), (86, 133940), (148, 77830), (172, 66970), (181, 63640), (185, 62264), (215, 53576), (296, 38915), (344, 33485), (362, 31820), (370, 31132), (430, 26788), (724, 15910), (740, 15566), (860, 13394), (905, 12728), (1448, 7955), (1480, 7783), (1591, 7240), (1720, 6697), (1810, 6364), (3182, 3620)]