400448380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1\times {\mathrm{613}}^1$

素因数の和:1078

約数の個数: 48

約数和(自身を含む): 854098560

約数和(自身を除く): 453650180

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 367, 445, 613, 734, 890, 1226, 1468, 1780, 1835, 2452, 3065, 3670, 6130, 7340, 12260, 32663, 54557, 65326, 109114, 130652, 163315, 218228, 224971, 272785, 326630, 449942, 545570, 653260, 899884, 1091140, 1124855, 2249710, 4499420, 20022419, 40044838, 80089676, 100112095, 200224190, 400448380]

約数ペア:

[(1, 400448380), (2, 200224190), (4, 100112095), (5, 80089676), (10, 40044838), (20, 20022419), (89, 4499420), (178, 2249710), (356, 1124855), (367, 1091140), (445, 899884), (613, 653260), (734, 545570), (890, 449942), (1226, 326630), (1468, 272785), (1780, 224971), (1835, 218228), (2452, 163315), (3065, 130652), (3670, 109114), (6130, 65326), (7340, 54557), (12260, 32663)]