21512659

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3259}}^1$

素因数の和:3330

約数の個数: 16

約数和(自身を含む): 26288640

約数和(自身を除く): 4775981

約数列:

[1, 7, 23, 41, 161, 287, 943, 3259, 6601, 22813, 74957, 133619, 524699, 935333, 3073237, 21512659]

約数ペア:

[(1, 21512659), (7, 3073237), (23, 935333), (41, 524699), (161, 133619), (287, 74957), (943, 22813), (3259, 6601)]