21686987

素因数分解:

$7^1\times {\mathrm{83}}^1\times {\mathrm{163}}^1\times {\mathrm{229}}^1$

素因数の和:482

約数の個数: 16

約数和(自身を含む): 25347840

約数和(自身を除く): 3660853

約数列:

[1, 7, 83, 163, 229, 581, 1141, 1603, 13529, 19007, 37327, 94703, 133049, 261289, 3098141, 21686987]

約数ペア:

[(1, 21686987), (7, 3098141), (83, 261289), (163, 133049), (229, 94703), (581, 37327), (1141, 19007), (1603, 13529)]