31481560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71549}}^1$

素因数の和:71571

約数の個数: 32

約数和(自身を含む): 77274000

約数和(自身を除く): 45792440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 71549, 143098, 286196, 357745, 572392, 715490, 787039, 1430980, 1574078, 2861960, 3148156, 3935195, 6296312, 7870390, 15740780, 31481560]

約数ペア:

[(1, 31481560), (2, 15740780), (4, 7870390), (5, 6296312), (8, 3935195), (10, 3148156), (11, 2861960), (20, 1574078), (22, 1430980), (40, 787039), (44, 715490), (55, 572392), (88, 357745), (110, 286196), (220, 143098), (440, 71549)]