257890920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{719}}^1$

素因数の和:808

約数の個数: 192

約数和(自身を含む): 916012800

約数和(自身を除く): 658121880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 61, 70, 84, 98, 105, 120, 122, 140, 147, 168, 183, 196, 210, 244, 245, 280, 294, 305, 366, 392, 420, 427, 488, 490, 588, 610, 719, 732, 735, 840, 854, 915, 980, 1176, 1220, 1281, 1438, 1464, 1470, 1708, 1830, 1960, 2135, 2157, 2440, 2562, 2876, 2940, 2989, 3416, 3595, 3660, 4270, 4314, 5033, 5124, 5752, 5880, 5978, 6405, 7190, 7320, 8540, 8628, 8967, 10066, 10248, 10785, 11956, 12810, 14380, 14945, 15099, 17080, 17256, 17934, 20132, 21570, 23912, 25165, 25620, 28760, 29890, 30198, 35231, 35868, 40264, 43140, 43859, 44835, 50330, 51240, 59780, 60396, 70462, 71736, 75495, 86280, 87718, 89670, 100660, 105693, 119560, 120792, 131577, 140924, 150990, 175436, 176155, 179340, 201320, 211386, 219295, 263154, 281848, 301980, 307013, 350872, 352310, 358680, 422772, 438590, 526308, 528465, 603960, 614026, 657885, 704620, 845544, 877180, 921039, 1052616, 1056930, 1228052, 1315770, 1409240, 1535065, 1754360, 1842078, 2113860, 2149091, 2456104, 2631540, 3070130, 3684156, 4227720, 4298182, 4605195, 5263080, 6140260, 6447273, 7368312, 8596364, 9210390, 10745455, 12280520, 12894546, 17192728, 18420780, 21490910, 25789092, 32236365, 36841560, 42981820, 51578184, 64472730, 85963640, 128945460, 257890920]

約数ペア:

[(1, 257890920), (2, 128945460), (3, 85963640), (4, 64472730), (5, 51578184), (6, 42981820), (7, 36841560), (8, 32236365), (10, 25789092), (12, 21490910), (14, 18420780), (15, 17192728), (20, 12894546), (21, 12280520), (24, 10745455), (28, 9210390), (30, 8596364), (35, 7368312), (40, 6447273), (42, 6140260), (49, 5263080), (56, 4605195), (60, 4298182), (61, 4227720), (70, 3684156), (84, 3070130), (98, 2631540), (105, 2456104), (120, 2149091), (122, 2113860), (140, 1842078), (147, 1754360), (168, 1535065), (183, 1409240), (196, 1315770), (210, 1228052), (244, 1056930), (245, 1052616), (280, 921039), (294, 877180), (305, 845544), (366, 704620), (392, 657885), (420, 614026), (427, 603960), (488, 528465), (490, 526308), (588, 438590), (610, 422772), (719, 358680), (732, 352310), (735, 350872), (840, 307013), (854, 301980), (915, 281848), (980, 263154), (1176, 219295), (1220, 211386), (1281, 201320), (1438, 179340), (1464, 176155), (1470, 175436), (1708, 150990), (1830, 140924), (1960, 131577), (2135, 120792), (2157, 119560), (2440, 105693), (2562, 100660), (2876, 89670), (2940, 87718), (2989, 86280), (3416, 75495), (3595, 71736), (3660, 70462), (4270, 60396), (4314, 59780), (5033, 51240), (5124, 50330), (5752, 44835), (5880, 43859), (5978, 43140), (6405, 40264), (7190, 35868), (7320, 35231), (8540, 30198), (8628, 29890), (8967, 28760), (10066, 25620), (10248, 25165), (10785, 23912), (11956, 21570), (12810, 20132), (14380, 17934), (14945, 17256), (15099, 17080)]