20861750

素因数分解:

$2^1\times 5^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:175

約数の個数: 96

約数和(自身を含む): 49297248

約数和(自身を除く): 28435498

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 49, 50, 65, 70, 91, 98, 125, 130, 131, 175, 182, 245, 250, 262, 325, 350, 455, 490, 637, 650, 655, 875, 910, 917, 1225, 1274, 1310, 1625, 1703, 1750, 1834, 2275, 2450, 3185, 3250, 3275, 3406, 4550, 4585, 6125, 6370, 6419, 6550, 8515, 9170, 11375, 11921, 12250, 12838, 15925, 16375, 17030, 22750, 22925, 23842, 31850, 32095, 32750, 42575, 45850, 59605, 64190, 79625, 83447, 85150, 114625, 119210, 159250, 160475, 166894, 212875, 229250, 298025, 320950, 417235, 425750, 596050, 802375, 834470, 1490125, 1604750, 2086175, 2980250, 4172350, 10430875, 20861750]

約数ペア:

[(1, 20861750), (2, 10430875), (5, 4172350), (7, 2980250), (10, 2086175), (13, 1604750), (14, 1490125), (25, 834470), (26, 802375), (35, 596050), (49, 425750), (50, 417235), (65, 320950), (70, 298025), (91, 229250), (98, 212875), (125, 166894), (130, 160475), (131, 159250), (175, 119210), (182, 114625), (245, 85150), (250, 83447), (262, 79625), (325, 64190), (350, 59605), (455, 45850), (490, 42575), (637, 32750), (650, 32095), (655, 31850), (875, 23842), (910, 22925), (917, 22750), (1225, 17030), (1274, 16375), (1310, 15925), (1625, 12838), (1703, 12250), (1750, 11921), (1834, 11375), (2275, 9170), (2450, 8515), (3185, 6550), (3250, 6419), (3275, 6370), (3406, 6125), (4550, 4585)]