20658490

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{449}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 38491200

約数和(自身を除く): 17832710

約数列:

[1, 2, 5, 10, 43, 86, 107, 214, 215, 430, 449, 535, 898, 1070, 2245, 4490, 4601, 9202, 19307, 23005, 38614, 46010, 48043, 96086, 96535, 193070, 240215, 480430, 2065849, 4131698, 10329245, 20658490]

約数ペア:

[(1, 20658490), (2, 10329245), (5, 4131698), (10, 2065849), (43, 480430), (86, 240215), (107, 193070), (214, 96535), (215, 96086), (430, 48043), (449, 46010), (535, 38614), (898, 23005), (1070, 19307), (2245, 9202), (4490, 4601)]