4065520

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{571}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 9575280

約数和(自身を除く): 5509760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 571, 712, 890, 1142, 1424, 1780, 2284, 2855, 3560, 4568, 5710, 7120, 9136, 11420, 22840, 45680, 50819, 101638, 203276, 254095, 406552, 508190, 813104, 1016380, 2032760, 4065520]

約数ペア:

[(1, 4065520), (2, 2032760), (4, 1016380), (5, 813104), (8, 508190), (10, 406552), (16, 254095), (20, 203276), (40, 101638), (80, 50819), (89, 45680), (178, 22840), (356, 11420), (445, 9136), (571, 7120), (712, 5710), (890, 4568), (1142, 3560), (1424, 2855), (1780, 2284)]