499156780

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1\times {\mathrm{571}}^1$

素因数の和:1090

約数の個数: 48

約数和(自身を含む): 1062341280

約数和(自身を除く): 563184500

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 401, 436, 545, 571, 802, 1090, 1142, 1604, 2005, 2180, 2284, 2855, 4010, 5710, 8020, 11420, 43709, 62239, 87418, 124478, 174836, 218545, 228971, 248956, 311195, 437090, 457942, 622390, 874180, 915884, 1144855, 1244780, 2289710, 4579420, 24957839, 49915678, 99831356, 124789195, 249578390, 499156780]

約数ペア:

[(1, 499156780), (2, 249578390), (4, 124789195), (5, 99831356), (10, 49915678), (20, 24957839), (109, 4579420), (218, 2289710), (401, 1244780), (436, 1144855), (545, 915884), (571, 874180), (802, 622390), (1090, 457942), (1142, 437090), (1604, 311195), (2005, 248956), (2180, 228971), (2284, 218545), (2855, 174836), (4010, 124478), (5710, 87418), (8020, 62239), (11420, 43709)]