20931750

素因数分解:

$2^1\times 3^3\times 5^3\times 7^1\times {\mathrm{443}}^1$

素因数の和:476

約数の個数: 128

約数和(自身を含む): 66493440

約数和(自身を除く): 45561690

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, 443, 450, 525, 630, 675, 750, 875, 886, 945, 1050, 1125, 1329, 1350, 1575, 1750, 1890, 2215, 2250, 2625, 2658, 3101, 3150, 3375, 3987, 4430, 4725, 5250, 6202, 6645, 6750, 7875, 7974, 9303, 9450, 11075, 11961, 13290, 15505, 15750, 18606, 19935, 22150, 23625, 23922, 27909, 31010, 33225, 39870, 46515, 47250, 55375, 55818, 59805, 66450, 77525, 83727, 93030, 99675, 110750, 119610, 139545, 155050, 166125, 167454, 199350, 232575, 279090, 299025, 332250, 387625, 418635, 465150, 498375, 598050, 697725, 775250, 837270, 996750, 1162875, 1395450, 1495125, 2093175, 2325750, 2990250, 3488625, 4186350, 6977250, 10465875, 20931750]

約数ペア:

[(1, 20931750), (2, 10465875), (3, 6977250), (5, 4186350), (6, 3488625), (7, 2990250), (9, 2325750), (10, 2093175), (14, 1495125), (15, 1395450), (18, 1162875), (21, 996750), (25, 837270), (27, 775250), (30, 697725), (35, 598050), (42, 498375), (45, 465150), (50, 418635), (54, 387625), (63, 332250), (70, 299025), (75, 279090), (90, 232575), (105, 199350), (125, 167454), (126, 166125), (135, 155050), (150, 139545), (175, 119610), (189, 110750), (210, 99675), (225, 93030), (250, 83727), (270, 77525), (315, 66450), (350, 59805), (375, 55818), (378, 55375), (443, 47250), (450, 46515), (525, 39870), (630, 33225), (675, 31010), (750, 27909), (875, 23922), (886, 23625), (945, 22150), (1050, 19935), (1125, 18606), (1329, 15750), (1350, 15505), (1575, 13290), (1750, 11961), (1890, 11075), (2215, 9450), (2250, 9303), (2625, 7974), (2658, 7875), (3101, 6750), (3150, 6645), (3375, 6202), (3987, 5250), (4430, 4725)]