21670838

素因数分解:

$2^1\times 7^2\times {\mathrm{251}}^1\times {\mathrm{881}}^1$

素因数の和:1148

約数の個数: 24

約数和(自身を含む): 38007144

約数和(自身を除く): 16336306

約数列:

[1, 2, 7, 14, 49, 98, 251, 502, 881, 1757, 1762, 3514, 6167, 12299, 12334, 24598, 43169, 86338, 221131, 442262, 1547917, 3095834, 10835419, 21670838]

約数ペア:

[(1, 21670838), (2, 10835419), (7, 3095834), (14, 1547917), (49, 442262), (98, 221131), (251, 86338), (502, 43169), (881, 24598), (1757, 12334), (1762, 12299), (3514, 6167)]