20742750

素因数分解:

$2^1\times 3^3\times 5^3\times 7^1\times {\mathrm{439}}^1$

素因数の和:472

約数の個数: 128

約数和(自身を含む): 65894400

約数和(自身を除く): 45151650

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 27, 30, 35, 42, 45, 50, 54, 63, 70, 75, 90, 105, 125, 126, 135, 150, 175, 189, 210, 225, 250, 270, 315, 350, 375, 378, 439, 450, 525, 630, 675, 750, 875, 878, 945, 1050, 1125, 1317, 1350, 1575, 1750, 1890, 2195, 2250, 2625, 2634, 3073, 3150, 3375, 3951, 4390, 4725, 5250, 6146, 6585, 6750, 7875, 7902, 9219, 9450, 10975, 11853, 13170, 15365, 15750, 18438, 19755, 21950, 23625, 23706, 27657, 30730, 32925, 39510, 46095, 47250, 54875, 55314, 59265, 65850, 76825, 82971, 92190, 98775, 109750, 118530, 138285, 153650, 164625, 165942, 197550, 230475, 276570, 296325, 329250, 384125, 414855, 460950, 493875, 592650, 691425, 768250, 829710, 987750, 1152375, 1382850, 1481625, 2074275, 2304750, 2963250, 3457125, 4148550, 6914250, 10371375, 20742750]

約数ペア:

[(1, 20742750), (2, 10371375), (3, 6914250), (5, 4148550), (6, 3457125), (7, 2963250), (9, 2304750), (10, 2074275), (14, 1481625), (15, 1382850), (18, 1152375), (21, 987750), (25, 829710), (27, 768250), (30, 691425), (35, 592650), (42, 493875), (45, 460950), (50, 414855), (54, 384125), (63, 329250), (70, 296325), (75, 276570), (90, 230475), (105, 197550), (125, 165942), (126, 164625), (135, 153650), (150, 138285), (175, 118530), (189, 109750), (210, 98775), (225, 92190), (250, 82971), (270, 76825), (315, 65850), (350, 59265), (375, 55314), (378, 54875), (439, 47250), (450, 46095), (525, 39510), (630, 32925), (675, 30730), (750, 27657), (875, 23706), (878, 23625), (945, 21950), (1050, 19755), (1125, 18438), (1317, 15750), (1350, 15365), (1575, 13170), (1750, 11853), (1890, 10975), (2195, 9450), (2250, 9219), (2625, 7902), (2634, 7875), (3073, 6750), (3150, 6585), (3375, 6146), (3951, 5250), (4390, 4725)]