20123235

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4517}}^1$

素因数の和:4545

約数の個数: 40

約数和(自身を含む): 39360816

約数和(自身を除く): 19237581

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 165, 297, 405, 495, 891, 1485, 4455, 4517, 13551, 22585, 40653, 49687, 67755, 121959, 149061, 203265, 248435, 365877, 447183, 609795, 745305, 1341549, 1829385, 2235915, 4024647, 6707745, 20123235]

約数ペア:

[(1, 20123235), (3, 6707745), (5, 4024647), (9, 2235915), (11, 1829385), (15, 1341549), (27, 745305), (33, 609795), (45, 447183), (55, 365877), (81, 248435), (99, 203265), (135, 149061), (165, 121959), (297, 67755), (405, 49687), (495, 40653), (891, 22585), (1485, 13551), (4455, 4517)]