19998900

素因数分解:

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

素因数の和:852

約数の個数: 108

約数和(自身を含む): 65086112

約数和(自身を除く): 45087212

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 135, 150, 162, 180, 225, 243, 270, 300, 324, 405, 450, 486, 540, 675, 810, 823, 900, 972, 1215, 1350, 1620, 1646, 2025, 2430, 2469, 2700, 3292, 4050, 4115, 4860, 4938, 6075, 7407, 8100, 8230, 9876, 12150, 12345, 14814, 16460, 20575, 22221, 24300, 24690, 29628, 37035, 41150, 44442, 49380, 61725, 66663, 74070, 82300, 88884, 111105, 123450, 133326, 148140, 185175, 199989, 222210, 246900, 266652, 333315, 370350, 399978, 444420, 555525, 666630, 740700, 799956, 999945, 1111050, 1333260, 1666575, 1999890, 2222100, 3333150, 3999780, 4999725, 6666300, 9999450, 19998900]

約数ペア:

[(1, 19998900), (2, 9999450), (3, 6666300), (4, 4999725), (5, 3999780), (6, 3333150), (9, 2222100), (10, 1999890), (12, 1666575), (15, 1333260), (18, 1111050), (20, 999945), (25, 799956), (27, 740700), (30, 666630), (36, 555525), (45, 444420), (50, 399978), (54, 370350), (60, 333315), (75, 266652), (81, 246900), (90, 222210), (100, 199989), (108, 185175), (135, 148140), (150, 133326), (162, 123450), (180, 111105), (225, 88884), (243, 82300), (270, 74070), (300, 66663), (324, 61725), (405, 49380), (450, 44442), (486, 41150), (540, 37035), (675, 29628), (810, 24690), (823, 24300), (900, 22221), (972, 20575), (1215, 16460), (1350, 14814), (1620, 12345), (1646, 12150), (2025, 9876), (2430, 8230), (2469, 8100), (2700, 7407), (3292, 6075), (4050, 4938), (4115, 4860)]