20956000

素因数分解:

$2^5\times 5^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:82

約数の個数: 144

約数和(自身を含む): 57552768

約数和(自身を除く): 36596768

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 125, 130, 155, 160, 169, 200, 208, 248, 250, 260, 310, 325, 338, 400, 403, 416, 496, 500, 520, 620, 650, 676, 775, 800, 806, 845, 992, 1000, 1040, 1240, 1300, 1352, 1550, 1612, 1625, 1690, 2000, 2015, 2080, 2480, 2600, 2704, 3100, 3224, 3250, 3380, 3875, 4000, 4030, 4225, 4960, 5200, 5239, 5408, 6200, 6448, 6500, 6760, 7750, 8060, 8450, 10075, 10400, 10478, 12400, 12896, 13000, 13520, 15500, 16120, 16900, 20150, 20956, 21125, 24800, 26000, 26195, 27040, 31000, 32240, 33800, 40300, 41912, 42250, 50375, 52000, 52390, 62000, 64480, 67600, 80600, 83824, 84500, 100750, 104780, 124000, 130975, 135200, 161200, 167648, 169000, 201500, 209560, 261950, 322400, 338000, 403000, 419120, 523900, 654875, 676000, 806000, 838240, 1047800, 1309750, 1612000, 2095600, 2619500, 4191200, 5239000, 10478000, 20956000]

約数ペア:

[(1, 20956000), (2, 10478000), (4, 5239000), (5, 4191200), (8, 2619500), (10, 2095600), (13, 1612000), (16, 1309750), (20, 1047800), (25, 838240), (26, 806000), (31, 676000), (32, 654875), (40, 523900), (50, 419120), (52, 403000), (62, 338000), (65, 322400), (80, 261950), (100, 209560), (104, 201500), (124, 169000), (125, 167648), (130, 161200), (155, 135200), (160, 130975), (169, 124000), (200, 104780), (208, 100750), (248, 84500), (250, 83824), (260, 80600), (310, 67600), (325, 64480), (338, 62000), (400, 52390), (403, 52000), (416, 50375), (496, 42250), (500, 41912), (520, 40300), (620, 33800), (650, 32240), (676, 31000), (775, 27040), (800, 26195), (806, 26000), (845, 24800), (992, 21125), (1000, 20956), (1040, 20150), (1240, 16900), (1300, 16120), (1352, 15500), (1550, 13520), (1612, 13000), (1625, 12896), (1690, 12400), (2000, 10478), (2015, 10400), (2080, 10075), (2480, 8450), (2600, 8060), (2704, 7750), (3100, 6760), (3224, 6500), (3250, 6448), (3380, 6200), (3875, 5408), (4000, 5239), (4030, 5200), (4225, 4960)]