1991385

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 3931200

約数和(自身を除く): 1939815

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 81, 99, 135, 149, 165, 243, 297, 405, 447, 495, 745, 891, 1215, 1341, 1485, 1639, 2235, 2673, 4023, 4455, 4917, 6705, 8195, 12069, 13365, 14751, 20115, 24585, 36207, 44253, 60345, 73755, 132759, 181035, 221265, 398277, 663795, 1991385]

約数ペア:

[(1, 1991385), (3, 663795), (5, 398277), (9, 221265), (11, 181035), (15, 132759), (27, 73755), (33, 60345), (45, 44253), (55, 36207), (81, 24585), (99, 20115), (135, 14751), (149, 13365), (165, 12069), (243, 8195), (297, 6705), (405, 4917), (447, 4455), (495, 4023), (745, 2673), (891, 2235), (1215, 1639), (1341, 1485)]