4051280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 9541800

約数和(自身を除く): 5490520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 569, 712, 890, 1138, 1424, 1780, 2276, 2845, 3560, 4552, 5690, 7120, 9104, 11380, 22760, 45520, 50641, 101282, 202564, 253205, 405128, 506410, 810256, 1012820, 2025640, 4051280]

約数ペア:

[(1, 4051280), (2, 2025640), (4, 1012820), (5, 810256), (8, 506410), (10, 405128), (16, 253205), (20, 202564), (40, 101282), (80, 50641), (89, 45520), (178, 22760), (356, 11380), (445, 9104), (569, 7120), (712, 5690), (890, 4552), (1138, 3560), (1424, 2845), (1780, 2276)]