21649245

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1163}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 37210752

約数和(自身を除く): 15561507

約数列:

[1, 3, 5, 15, 17, 51, 73, 85, 219, 255, 365, 1095, 1163, 1241, 3489, 3723, 5815, 6205, 17445, 18615, 19771, 59313, 84899, 98855, 254697, 296565, 424495, 1273485, 1443283, 4329849, 7216415, 21649245]

約数ペア:

[(1, 21649245), (3, 7216415), (5, 4329849), (15, 1443283), (17, 1273485), (51, 424495), (73, 296565), (85, 254697), (219, 98855), (255, 84899), (365, 59313), (1095, 19771), (1163, 18615), (1241, 17445), (3489, 6205), (3723, 5815)]