18291280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1$

素因数の和:476

約数の個数: 80

約数和(自身を含む): 49282560

約数和(自身を除く): 30991280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 89, 112, 140, 178, 280, 356, 367, 445, 560, 623, 712, 734, 890, 1246, 1424, 1468, 1780, 1835, 2492, 2569, 2936, 3115, 3560, 3670, 4984, 5138, 5872, 6230, 7120, 7340, 9968, 10276, 12460, 12845, 14680, 20552, 24920, 25690, 29360, 32663, 41104, 49840, 51380, 65326, 102760, 130652, 163315, 205520, 228641, 261304, 326630, 457282, 522608, 653260, 914564, 1143205, 1306520, 1829128, 2286410, 2613040, 3658256, 4572820, 9145640, 18291280]

約数ペア:

[(1, 18291280), (2, 9145640), (4, 4572820), (5, 3658256), (7, 2613040), (8, 2286410), (10, 1829128), (14, 1306520), (16, 1143205), (20, 914564), (28, 653260), (35, 522608), (40, 457282), (56, 326630), (70, 261304), (80, 228641), (89, 205520), (112, 163315), (140, 130652), (178, 102760), (280, 65326), (356, 51380), (367, 49840), (445, 41104), (560, 32663), (623, 29360), (712, 25690), (734, 24920), (890, 20552), (1246, 14680), (1424, 12845), (1468, 12460), (1780, 10276), (1835, 9968), (2492, 7340), (2569, 7120), (2936, 6230), (3115, 5872), (3560, 5138), (3670, 4984)]