21189688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{3041}}^1$

素因数の和:3127

約数の個数: 32

約数和(自身を含む): 43439760

約数和(自身を除く): 22250072

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 3041, 3484, 6082, 6968, 12164, 24328, 39533, 79066, 158132, 203747, 316264, 407494, 814988, 1629976, 2648711, 5297422, 10594844, 21189688]

約数ペア:

[(1, 21189688), (2, 10594844), (4, 5297422), (8, 2648711), (13, 1629976), (26, 814988), (52, 407494), (67, 316264), (104, 203747), (134, 158132), (268, 79066), (536, 39533), (871, 24328), (1742, 12164), (3041, 6968), (3484, 6082)]