21452529

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 33771520

約数和(自身を除く): 12318991

約数列:

[1, 3, 7, 21, 67, 79, 193, 201, 237, 469, 553, 579, 1351, 1407, 1659, 4053, 5293, 12931, 15247, 15879, 37051, 38793, 45741, 90517, 106729, 111153, 271551, 320187, 1021549, 3064647, 7150843, 21452529]

約数ペア:

[(1, 21452529), (3, 7150843), (7, 3064647), (21, 1021549), (67, 320187), (79, 271551), (193, 111153), (201, 106729), (237, 90517), (469, 45741), (553, 38793), (579, 37051), (1351, 15879), (1407, 15247), (1659, 12931), (4053, 5293)]