19613375

素因数分解:

$5^3\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:188

約数の個数: 32

約数和(自身を含む): 25945920

約数和(自身を除く): 6332545

約数列:

[1, 5, 25, 41, 43, 89, 125, 205, 215, 445, 1025, 1075, 1763, 2225, 3649, 3827, 5125, 5375, 8815, 11125, 18245, 19135, 44075, 91225, 95675, 156907, 220375, 456125, 478375, 784535, 3922675, 19613375]

約数ペア:

[(1, 19613375), (5, 3922675), (25, 784535), (41, 478375), (43, 456125), (89, 220375), (125, 156907), (205, 95675), (215, 91225), (445, 44075), (1025, 19135), (1075, 18245), (1763, 11125), (2225, 8815), (3649, 5375), (3827, 5125)]