18193840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{613}}^1$

素因数の和:686

約数の個数: 80

約数和(自身を含む): 49336128

約数和(自身を除く): 31142288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 53, 56, 70, 80, 106, 112, 140, 212, 265, 280, 371, 424, 530, 560, 613, 742, 848, 1060, 1226, 1484, 1855, 2120, 2452, 2968, 3065, 3710, 4240, 4291, 4904, 5936, 6130, 7420, 8582, 9808, 12260, 14840, 17164, 21455, 24520, 29680, 32489, 34328, 42910, 49040, 64978, 68656, 85820, 129956, 162445, 171640, 227423, 259912, 324890, 343280, 454846, 519824, 649780, 909692, 1137115, 1299560, 1819384, 2274230, 2599120, 3638768, 4548460, 9096920, 18193840]

約数ペア:

[(1, 18193840), (2, 9096920), (4, 4548460), (5, 3638768), (7, 2599120), (8, 2274230), (10, 1819384), (14, 1299560), (16, 1137115), (20, 909692), (28, 649780), (35, 519824), (40, 454846), (53, 343280), (56, 324890), (70, 259912), (80, 227423), (106, 171640), (112, 162445), (140, 129956), (212, 85820), (265, 68656), (280, 64978), (371, 49040), (424, 42910), (530, 34328), (560, 32489), (613, 29680), (742, 24520), (848, 21455), (1060, 17164), (1226, 14840), (1484, 12260), (1855, 9808), (2120, 8582), (2452, 7420), (2968, 6130), (3065, 5936), (3710, 4904), (4240, 4291)]