21730225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2549}}^1$

素因数の和:2601

約数の個数: 24

約数和(自身を含む): 30355200

約数和(自身を除く): 8624975

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2549, 8525, 12745, 28039, 63725, 79019, 140195, 395095, 700975, 869209, 1975475, 4346045, 21730225]

約数ペア:

[(1, 21730225), (5, 4346045), (11, 1975475), (25, 869209), (31, 700975), (55, 395095), (155, 140195), (275, 79019), (341, 63725), (775, 28039), (1705, 12745), (2549, 8525)]