81081990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{81901}}^1$

素因数の和:81925

約数の個数: 48

約数和(自身を含む): 229980816

約数和(自身を除く): 148898826

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990, 81901, 163802, 245703, 409505, 491406, 737109, 819010, 900911, 1228515, 1474218, 1801822, 2457030, 2702733, 3685545, 4504555, 5405466, 7371090, 8108199, 9009110, 13513665, 16216398, 27027330, 40540995, 81081990]

約数ペア:

[(1, 81081990), (2, 40540995), (3, 27027330), (5, 16216398), (6, 13513665), (9, 9009110), (10, 8108199), (11, 7371090), (15, 5405466), (18, 4504555), (22, 3685545), (30, 2702733), (33, 2457030), (45, 1801822), (55, 1474218), (66, 1228515), (90, 900911), (99, 819010), (110, 737109), (165, 491406), (198, 409505), (330, 245703), (495, 163802), (990, 81901)]