21494375

素因数分解:

$5^4\times 7^1\times {\mathrm{17}}^3$

素因数の和:78

約数の個数: 40

約数和(自身を含む): 32614560

約数和(自身を除く): 11120185

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 125, 175, 289, 425, 595, 625, 875, 1445, 2023, 2125, 2975, 4375, 4913, 7225, 10115, 10625, 14875, 24565, 34391, 36125, 50575, 74375, 122825, 171955, 180625, 252875, 614125, 859775, 1264375, 3070625, 4298875, 21494375]

約数ペア:

[(1, 21494375), (5, 4298875), (7, 3070625), (17, 1264375), (25, 859775), (35, 614125), (85, 252875), (119, 180625), (125, 171955), (175, 122825), (289, 74375), (425, 50575), (595, 36125), (625, 34391), (875, 24565), (1445, 14875), (2023, 10625), (2125, 10115), (2975, 7225), (4375, 4913)]