21642460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{154589}}^1$

素因数の和:154605

約数の個数: 24

約数和(自身を含む): 51942240

約数和(自身を除く): 30299780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 154589, 309178, 618356, 772945, 1082123, 1545890, 2164246, 3091780, 4328492, 5410615, 10821230, 21642460]

約数ペア:

[(1, 21642460), (2, 10821230), (4, 5410615), (5, 4328492), (7, 3091780), (10, 2164246), (14, 1545890), (20, 1082123), (28, 772945), (35, 618356), (70, 309178), (140, 154589)]