20342720

素因数分解:

$2^6\times 5^1\times {\mathrm{151}}^1\times {\mathrm{421}}^1$

素因数の和:589

約数の個数: 56

約数和(自身を含む): 48877728

約数和(自身を除く): 28535008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 151, 160, 302, 320, 421, 604, 755, 842, 1208, 1510, 1684, 2105, 2416, 3020, 3368, 4210, 4832, 6040, 6736, 8420, 9664, 12080, 13472, 16840, 24160, 26944, 33680, 48320, 63571, 67360, 127142, 134720, 254284, 317855, 508568, 635710, 1017136, 1271420, 2034272, 2542840, 4068544, 5085680, 10171360, 20342720]

約数ペア:

[(1, 20342720), (2, 10171360), (4, 5085680), (5, 4068544), (8, 2542840), (10, 2034272), (16, 1271420), (20, 1017136), (32, 635710), (40, 508568), (64, 317855), (80, 254284), (151, 134720), (160, 127142), (302, 67360), (320, 63571), (421, 48320), (604, 33680), (755, 26944), (842, 24160), (1208, 16840), (1510, 13472), (1684, 12080), (2105, 9664), (2416, 8420), (3020, 6736), (3368, 6040), (4210, 4832)]