20324640

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{263}}^1$

素因数の和:311

約数の個数: 192

約数和(自身を含む): 76640256

約数和(自身を除く): 56315616

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 138, 140, 160, 161, 168, 184, 210, 224, 230, 240, 263, 276, 280, 322, 336, 345, 368, 420, 460, 480, 483, 526, 552, 560, 644, 672, 690, 736, 789, 805, 840, 920, 966, 1052, 1104, 1120, 1288, 1315, 1380, 1578, 1610, 1680, 1840, 1841, 1932, 2104, 2208, 2415, 2576, 2630, 2760, 3156, 3220, 3360, 3680, 3682, 3864, 3945, 4208, 4830, 5152, 5260, 5520, 5523, 6049, 6312, 6440, 7364, 7728, 7890, 8416, 9205, 9660, 10520, 11040, 11046, 12098, 12624, 12880, 14728, 15456, 15780, 18147, 18410, 19320, 21040, 22092, 24196, 25248, 25760, 27615, 29456, 30245, 31560, 36294, 36820, 38640, 42080, 42343, 44184, 48392, 55230, 58912, 60490, 63120, 72588, 73640, 77280, 84686, 88368, 90735, 96784, 110460, 120980, 126240, 127029, 145176, 147280, 169372, 176736, 181470, 193568, 211715, 220920, 241960, 254058, 290352, 294560, 338744, 362940, 423430, 441840, 483920, 508116, 580704, 635145, 677488, 725880, 846860, 883680, 967840, 1016232, 1270290, 1354976, 1451760, 1693720, 2032464, 2540580, 2903520, 3387440, 4064928, 5081160, 6774880, 10162320, 20324640]

約数ペア:

[(1, 20324640), (2, 10162320), (3, 6774880), (4, 5081160), (5, 4064928), (6, 3387440), (7, 2903520), (8, 2540580), (10, 2032464), (12, 1693720), (14, 1451760), (15, 1354976), (16, 1270290), (20, 1016232), (21, 967840), (23, 883680), (24, 846860), (28, 725880), (30, 677488), (32, 635145), (35, 580704), (40, 508116), (42, 483920), (46, 441840), (48, 423430), (56, 362940), (60, 338744), (69, 294560), (70, 290352), (80, 254058), (84, 241960), (92, 220920), (96, 211715), (105, 193568), (112, 181470), (115, 176736), (120, 169372), (138, 147280), (140, 145176), (160, 127029), (161, 126240), (168, 120980), (184, 110460), (210, 96784), (224, 90735), (230, 88368), (240, 84686), (263, 77280), (276, 73640), (280, 72588), (322, 63120), (336, 60490), (345, 58912), (368, 55230), (420, 48392), (460, 44184), (480, 42343), (483, 42080), (526, 38640), (552, 36820), (560, 36294), (644, 31560), (672, 30245), (690, 29456), (736, 27615), (789, 25760), (805, 25248), (840, 24196), (920, 22092), (966, 21040), (1052, 19320), (1104, 18410), (1120, 18147), (1288, 15780), (1315, 15456), (1380, 14728), (1578, 12880), (1610, 12624), (1680, 12098), (1840, 11046), (1841, 11040), (1932, 10520), (2104, 9660), (2208, 9205), (2415, 8416), (2576, 7890), (2630, 7728), (2760, 7364), (3156, 6440), (3220, 6312), (3360, 6049), (3680, 5523), (3682, 5520), (3864, 5260), (3945, 5152), (4208, 4830)]