18468320

素因数分解:

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

素因数の和:724

約数の個数: 72

約数和(自身を含む): 47315016

約数和(自身を除く): 28846696

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, 676, 683, 845, 1040, 1352, 1366, 1690, 2080, 2704, 2732, 3380, 3415, 5408, 5464, 6760, 6830, 8879, 10928, 13520, 13660, 17758, 21856, 27040, 27320, 35516, 44395, 54640, 71032, 88790, 109280, 115427, 142064, 177580, 230854, 284128, 355160, 461708, 577135, 710320, 923416, 1154270, 1420640, 1846832, 2308540, 3693664, 4617080, 9234160, 18468320]

約数ペア:

[(1, 18468320), (2, 9234160), (4, 4617080), (5, 3693664), (8, 2308540), (10, 1846832), (13, 1420640), (16, 1154270), (20, 923416), (26, 710320), (32, 577135), (40, 461708), (52, 355160), (65, 284128), (80, 230854), (104, 177580), (130, 142064), (160, 115427), (169, 109280), (208, 88790), (260, 71032), (338, 54640), (416, 44395), (520, 35516), (676, 27320), (683, 27040), (845, 21856), (1040, 17758), (1352, 13660), (1366, 13520), (1690, 10928), (2080, 8879), (2704, 6830), (2732, 6760), (3380, 5464), (3415, 5408)]