21731290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{310447}}^1$

素因数の和:310461

約数の個数: 16

約数和(自身を含む): 44704512

約数和(自身を除く): 22973222

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 310447, 620894, 1552235, 2173129, 3104470, 4346258, 10865645, 21731290]

約数ペア:

[(1, 21731290), (2, 10865645), (5, 4346258), (7, 3104470), (10, 2173129), (14, 1552235), (35, 620894), (70, 310447)]