20420100

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{2521}}^1$

素因数の和:2547

約数の個数: 90

約数和(自身を含む): 66220154

約数和(自身を除く): 45800054

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, 270, 300, 324, 405, 450, 540, 675, 810, 900, 1350, 1620, 2025, 2521, 2700, 4050, 5042, 7563, 8100, 10084, 12605, 15126, 22689, 25210, 30252, 37815, 45378, 50420, 63025, 68067, 75630, 90756, 113445, 126050, 136134, 151260, 189075, 204201, 226890, 252100, 272268, 340335, 378150, 408402, 453780, 567225, 680670, 756300, 816804, 1021005, 1134450, 1361340, 1701675, 2042010, 2268900, 3403350, 4084020, 5105025, 6806700, 10210050, 20420100]

約数ペア:

[(1, 20420100), (2, 10210050), (3, 6806700), (4, 5105025), (5, 4084020), (6, 3403350), (9, 2268900), (10, 2042010), (12, 1701675), (15, 1361340), (18, 1134450), (20, 1021005), (25, 816804), (27, 756300), (30, 680670), (36, 567225), (45, 453780), (50, 408402), (54, 378150), (60, 340335), (75, 272268), (81, 252100), (90, 226890), (100, 204201), (108, 189075), (135, 151260), (150, 136134), (162, 126050), (180, 113445), (225, 90756), (270, 75630), (300, 68067), (324, 63025), (405, 50420), (450, 45378), (540, 37815), (675, 30252), (810, 25210), (900, 22689), (1350, 15126), (1620, 12605), (2025, 10084), (2521, 8100), (2700, 7563), (4050, 5042)]