18658720

素因数分解:

$2^5\times 5^1\times {\mathrm{277}}^1\times {\mathrm{421}}^1$

素因数の和:713

約数の個数: 48

約数和(自身を含む): 44345448

約数和(自身を除く): 25686728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 277, 421, 554, 842, 1108, 1385, 1684, 2105, 2216, 2770, 3368, 4210, 4432, 5540, 6736, 8420, 8864, 11080, 13472, 16840, 22160, 33680, 44320, 67360, 116617, 233234, 466468, 583085, 932936, 1166170, 1865872, 2332340, 3731744, 4664680, 9329360, 18658720]

約数ペア:

[(1, 18658720), (2, 9329360), (4, 4664680), (5, 3731744), (8, 2332340), (10, 1865872), (16, 1166170), (20, 932936), (32, 583085), (40, 466468), (80, 233234), (160, 116617), (277, 67360), (421, 44320), (554, 33680), (842, 22160), (1108, 16840), (1385, 13472), (1684, 11080), (2105, 8864), (2216, 8420), (2770, 6736), (3368, 5540), (4210, 4432)]