21372530

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{571}}^1$

素因数の和:794

約数の個数: 32

約数和(自身を含む): 40772160

約数和(自身を除く): 19399630

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 197, 394, 571, 985, 1142, 1970, 2855, 3743, 5710, 7486, 10849, 18715, 21698, 37430, 54245, 108490, 112487, 224974, 562435, 1124870, 2137253, 4274506, 10686265, 21372530]

約数ペア:

[(1, 21372530), (2, 10686265), (5, 4274506), (10, 2137253), (19, 1124870), (38, 562435), (95, 224974), (190, 112487), (197, 108490), (394, 54245), (571, 37430), (985, 21698), (1142, 18715), (1970, 10849), (2855, 7486), (3743, 5710)]