21207654

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90631}}^1$

素因数の和:90652

約数の個数: 24

約数和(自身を含む): 49485072

約数和(自身を除く): 28277418

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90631, 181262, 271893, 543786, 815679, 1178203, 1631358, 2356406, 3534609, 7069218, 10603827, 21207654]

約数ペア:

[(1, 21207654), (2, 10603827), (3, 7069218), (6, 3534609), (9, 2356406), (13, 1631358), (18, 1178203), (26, 815679), (39, 543786), (78, 271893), (117, 181262), (234, 90631)]