20577900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:304

約数の個数: 144

約数和(自身を含む): 69995520

約数和(自身を除く): 49417620

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 41, 42, 50, 60, 70, 75, 82, 84, 100, 105, 123, 140, 150, 164, 175, 205, 210, 239, 246, 287, 300, 350, 410, 420, 478, 492, 525, 574, 615, 700, 717, 820, 861, 956, 1025, 1050, 1148, 1195, 1230, 1434, 1435, 1673, 1722, 2050, 2100, 2390, 2460, 2868, 2870, 3075, 3346, 3444, 3585, 4100, 4305, 4780, 5019, 5740, 5975, 6150, 6692, 7170, 7175, 8365, 8610, 9799, 10038, 11950, 12300, 14340, 14350, 16730, 17220, 17925, 19598, 20076, 21525, 23900, 25095, 28700, 29397, 33460, 35850, 39196, 41825, 43050, 48995, 50190, 58794, 68593, 71700, 83650, 86100, 97990, 100380, 117588, 125475, 137186, 146985, 167300, 195980, 205779, 244975, 250950, 274372, 293970, 342965, 411558, 489950, 501900, 587940, 685930, 734925, 823116, 979900, 1028895, 1371860, 1469850, 1714825, 2057790, 2939700, 3429650, 4115580, 5144475, 6859300, 10288950, 20577900]

約数ペア:

[(1, 20577900), (2, 10288950), (3, 6859300), (4, 5144475), (5, 4115580), (6, 3429650), (7, 2939700), (10, 2057790), (12, 1714825), (14, 1469850), (15, 1371860), (20, 1028895), (21, 979900), (25, 823116), (28, 734925), (30, 685930), (35, 587940), (41, 501900), (42, 489950), (50, 411558), (60, 342965), (70, 293970), (75, 274372), (82, 250950), (84, 244975), (100, 205779), (105, 195980), (123, 167300), (140, 146985), (150, 137186), (164, 125475), (175, 117588), (205, 100380), (210, 97990), (239, 86100), (246, 83650), (287, 71700), (300, 68593), (350, 58794), (410, 50190), (420, 48995), (478, 43050), (492, 41825), (525, 39196), (574, 35850), (615, 33460), (700, 29397), (717, 28700), (820, 25095), (861, 23900), (956, 21525), (1025, 20076), (1050, 19598), (1148, 17925), (1195, 17220), (1230, 16730), (1434, 14350), (1435, 14340), (1673, 12300), (1722, 11950), (2050, 10038), (2100, 9799), (2390, 8610), (2460, 8365), (2868, 7175), (2870, 7170), (3075, 6692), (3346, 6150), (3444, 5975), (3585, 5740), (4100, 5019), (4305, 4780)]