1420640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{683}}^1$

素因数の和:711

約数の個数: 48

約数和(自身を含む): 3619728

約数和(自身を除く): 2199088

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 683, 1040, 1366, 2080, 2732, 3415, 5464, 6830, 8879, 10928, 13660, 17758, 21856, 27320, 35516, 44395, 54640, 71032, 88790, 109280, 142064, 177580, 284128, 355160, 710320, 1420640]

約数ペア:

[(1, 1420640), (2, 710320), (4, 355160), (5, 284128), (8, 177580), (10, 142064), (13, 109280), (16, 88790), (20, 71032), (26, 54640), (32, 44395), (40, 35516), (52, 27320), (65, 21856), (80, 17758), (104, 13660), (130, 10928), (160, 8879), (208, 6830), (260, 5464), (416, 3415), (520, 2732), (683, 2080), (1040, 1366)]