21257400

素因数分解:

$2^3\times 3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{499}}^1$

素因数の和:589

約数の個数: 96

約数和(自身を含む): 66960000

約数和(自身を除く): 45702600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 71, 75, 100, 120, 142, 150, 200, 213, 284, 300, 355, 426, 499, 568, 600, 710, 852, 998, 1065, 1420, 1497, 1704, 1775, 1996, 2130, 2495, 2840, 2994, 3550, 3992, 4260, 4990, 5325, 5988, 7100, 7485, 8520, 9980, 10650, 11976, 12475, 14200, 14970, 19960, 21300, 24950, 29940, 35429, 37425, 42600, 49900, 59880, 70858, 74850, 99800, 106287, 141716, 149700, 177145, 212574, 283432, 299400, 354290, 425148, 531435, 708580, 850296, 885725, 1062870, 1417160, 1771450, 2125740, 2657175, 3542900, 4251480, 5314350, 7085800, 10628700, 21257400]

約数ペア:

[(1, 21257400), (2, 10628700), (3, 7085800), (4, 5314350), (5, 4251480), (6, 3542900), (8, 2657175), (10, 2125740), (12, 1771450), (15, 1417160), (20, 1062870), (24, 885725), (25, 850296), (30, 708580), (40, 531435), (50, 425148), (60, 354290), (71, 299400), (75, 283432), (100, 212574), (120, 177145), (142, 149700), (150, 141716), (200, 106287), (213, 99800), (284, 74850), (300, 70858), (355, 59880), (426, 49900), (499, 42600), (568, 37425), (600, 35429), (710, 29940), (852, 24950), (998, 21300), (1065, 19960), (1420, 14970), (1497, 14200), (1704, 12475), (1775, 11976), (1996, 10650), (2130, 9980), (2495, 8520), (2840, 7485), (2994, 7100), (3550, 5988), (3992, 5325), (4260, 4990)]