21320200

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^2\times {\mathrm{881}}^1$

素因数の和:919

約数の個数: 72

約数和(自身を含む): 54547290

約数和(自身を除く): 33227090

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 121, 200, 220, 242, 275, 440, 484, 550, 605, 881, 968, 1100, 1210, 1762, 2200, 2420, 3025, 3524, 4405, 4840, 6050, 7048, 8810, 9691, 12100, 17620, 19382, 22025, 24200, 35240, 38764, 44050, 48455, 77528, 88100, 96910, 106601, 176200, 193820, 213202, 242275, 387640, 426404, 484550, 533005, 852808, 969100, 1066010, 1938200, 2132020, 2665025, 4264040, 5330050, 10660100, 21320200]

約数ペア:

[(1, 21320200), (2, 10660100), (4, 5330050), (5, 4264040), (8, 2665025), (10, 2132020), (11, 1938200), (20, 1066010), (22, 969100), (25, 852808), (40, 533005), (44, 484550), (50, 426404), (55, 387640), (88, 242275), (100, 213202), (110, 193820), (121, 176200), (200, 106601), (220, 96910), (242, 88100), (275, 77528), (440, 48455), (484, 44050), (550, 38764), (605, 35240), (881, 24200), (968, 22025), (1100, 19382), (1210, 17620), (1762, 12100), (2200, 9691), (2420, 8810), (3025, 7048), (3524, 6050), (4405, 4840)]