18857139

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{283}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 30535680

約数和(自身を除く): 11678541

約数列:

[1, 3, 7, 19, 21, 57, 133, 167, 283, 399, 501, 849, 1169, 1981, 3173, 3507, 5377, 5943, 9519, 16131, 22211, 37639, 47261, 66633, 112917, 141783, 330827, 897959, 992481, 2693877, 6285713, 18857139]

約数ペア:

[(1, 18857139), (3, 6285713), (7, 2693877), (19, 992481), (21, 897959), (57, 330827), (133, 141783), (167, 112917), (283, 66633), (399, 47261), (501, 37639), (849, 22211), (1169, 16131), (1981, 9519), (3173, 5943), (3507, 5377)]