64254440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{18049}}^1$

素因数の和:18149

約数の個数: 32

約数和(自身を含む): 146205000

約数和(自身を除く): 81950560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 18049, 36098, 72196, 90245, 144392, 180490, 360980, 721960, 1606361, 3212722, 6425444, 8031805, 12850888, 16063610, 32127220, 64254440]

約数ペア:

[(1, 64254440), (2, 32127220), (4, 16063610), (5, 12850888), (8, 8031805), (10, 6425444), (20, 3212722), (40, 1606361), (89, 721960), (178, 360980), (356, 180490), (445, 144392), (712, 90245), (890, 72196), (1780, 36098), (3560, 18049)]