61321775

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{509}}^1$

素因数の和:659

約数の個数: 24

約数和(自身を含む): 78417600

約数和(自身を除く): 17095825

約数列:

[1, 5, 25, 61, 79, 305, 395, 509, 1525, 1975, 2545, 4819, 12725, 24095, 31049, 40211, 120475, 155245, 201055, 776225, 1005275, 2452871, 12264355, 61321775]

約数ペア:

[(1, 61321775), (5, 12264355), (25, 2452871), (61, 1005275), (79, 776225), (305, 201055), (395, 155245), (509, 120475), (1525, 40211), (1975, 31049), (2545, 24095), (4819, 12725)]