18278403

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{311}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 28933632

約数和(自身を除く): 10655229

約数列:

[1, 3, 11, 13, 33, 39, 137, 143, 311, 411, 429, 933, 1507, 1781, 3421, 4043, 4521, 5343, 10263, 12129, 19591, 42607, 44473, 58773, 127821, 133419, 468677, 553891, 1406031, 1661673, 6092801, 18278403]

約数ペア:

[(1, 18278403), (3, 6092801), (11, 1661673), (13, 1406031), (33, 553891), (39, 468677), (137, 133419), (143, 127821), (311, 58773), (411, 44473), (429, 42607), (933, 19591), (1507, 12129), (1781, 10263), (3421, 5343), (4043, 4521)]