1999890

素因数分解:

$2^1\times 3^5\times 5^1\times {\mathrm{823}}^1$

素因数の和:845

約数の個数: 48

約数和(自身を含む): 5398848

約数和(自身を除く): 3398958

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 243, 270, 405, 486, 810, 823, 1215, 1646, 2430, 2469, 4115, 4938, 7407, 8230, 12345, 14814, 22221, 24690, 37035, 44442, 66663, 74070, 111105, 133326, 199989, 222210, 333315, 399978, 666630, 999945, 1999890]

約数ペア:

[(1, 1999890), (2, 999945), (3, 666630), (5, 399978), (6, 333315), (9, 222210), (10, 199989), (15, 133326), (18, 111105), (27, 74070), (30, 66663), (45, 44442), (54, 37035), (81, 24690), (90, 22221), (135, 14814), (162, 12345), (243, 8230), (270, 7407), (405, 4938), (486, 4115), (810, 2469), (823, 2430), (1215, 1646)]