18547840

素因数分解:

$2^7\times 5^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:489

約数の個数: 64

約数和(自身を含む): 45061560

約数和(自身を除く): 26513720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 160, 292, 320, 365, 397, 584, 640, 730, 794, 1168, 1460, 1588, 1985, 2336, 2920, 3176, 3970, 4672, 5840, 6352, 7940, 9344, 11680, 12704, 15880, 23360, 25408, 28981, 31760, 46720, 50816, 57962, 63520, 115924, 127040, 144905, 231848, 254080, 289810, 463696, 579620, 927392, 1159240, 1854784, 2318480, 3709568, 4636960, 9273920, 18547840]

約数ペア:

[(1, 18547840), (2, 9273920), (4, 4636960), (5, 3709568), (8, 2318480), (10, 1854784), (16, 1159240), (20, 927392), (32, 579620), (40, 463696), (64, 289810), (73, 254080), (80, 231848), (128, 144905), (146, 127040), (160, 115924), (292, 63520), (320, 57962), (365, 50816), (397, 46720), (584, 31760), (640, 28981), (730, 25408), (794, 23360), (1168, 15880), (1460, 12704), (1588, 11680), (1985, 9344), (2336, 7940), (2920, 6352), (3176, 5840), (3970, 4672)]