21044810

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1567}}^1$

素因数の和:1670

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19597750

約数列:

[1, 2, 5, 10, 17, 34, 79, 85, 158, 170, 395, 790, 1343, 1567, 2686, 3134, 6715, 7835, 13430, 15670, 26639, 53278, 123793, 133195, 247586, 266390, 618965, 1237930, 2104481, 4208962, 10522405, 21044810]

約数ペア:

[(1, 21044810), (2, 10522405), (5, 4208962), (10, 2104481), (17, 1237930), (34, 618965), (79, 266390), (85, 247586), (158, 133195), (170, 123793), (395, 53278), (790, 26639), (1343, 15670), (1567, 13430), (2686, 7835), (3134, 6715)]