21280328

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4229}}^1$

素因数の和:4289

約数の個数: 32

約数和(自身を含む): 43399800

約数和(自身を除く): 22119472

約数列:

[1, 2, 4, 8, 17, 34, 37, 68, 74, 136, 148, 296, 629, 1258, 2516, 4229, 5032, 8458, 16916, 33832, 71893, 143786, 156473, 287572, 312946, 575144, 625892, 1251784, 2660041, 5320082, 10640164, 21280328]

約数ペア:

[(1, 21280328), (2, 10640164), (4, 5320082), (8, 2660041), (17, 1251784), (34, 625892), (37, 575144), (68, 312946), (74, 287572), (136, 156473), (148, 143786), (296, 71893), (629, 33832), (1258, 16916), (2516, 8458), (4229, 5032)]