21371823

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{227}}^1\times {\mathrm{317}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 34801920

約数和(自身を除く): 13430097

約数列:

[1, 3, 9, 11, 27, 33, 99, 227, 297, 317, 681, 951, 2043, 2497, 2853, 3487, 6129, 7491, 8559, 10461, 22473, 31383, 67419, 71959, 94149, 215877, 647631, 791549, 1942893, 2374647, 7123941, 21371823]

約数ペア:

[(1, 21371823), (3, 7123941), (9, 2374647), (11, 1942893), (27, 791549), (33, 647631), (99, 215877), (227, 94149), (297, 71959), (317, 67419), (681, 31383), (951, 22473), (2043, 10461), (2497, 8559), (2853, 7491), (3487, 6129)]