21171129

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 33632256

約数和(自身を除く): 12461127

約数列:

[1, 3, 7, 21, 41, 67, 123, 201, 287, 367, 469, 861, 1101, 1407, 2569, 2747, 7707, 8241, 15047, 19229, 24589, 45141, 57687, 73767, 105329, 172123, 315987, 516369, 1008149, 3024447, 7057043, 21171129]

約数ペア:

[(1, 21171129), (3, 7057043), (7, 3024447), (21, 1008149), (41, 516369), (67, 315987), (123, 172123), (201, 105329), (287, 73767), (367, 57687), (469, 45141), (861, 24589), (1101, 19229), (1407, 15047), (2569, 8241), (2747, 7707)]