21208856

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 40666080

約数和(自身を除く): 19457224

約数列:

[1, 2, 4, 8, 97, 151, 181, 194, 302, 362, 388, 604, 724, 776, 1208, 1448, 14647, 17557, 27331, 29294, 35114, 54662, 58588, 70228, 109324, 117176, 140456, 218648, 2651107, 5302214, 10604428, 21208856]

約数ペア:

[(1, 21208856), (2, 10604428), (4, 5302214), (8, 2651107), (97, 218648), (151, 140456), (181, 117176), (194, 109324), (302, 70228), (362, 58588), (388, 54662), (604, 35114), (724, 29294), (776, 27331), (1208, 17557), (1448, 14647)]