257371520

素因数分解:

$2^7\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{283}}^1$

素因数の和:345

約数の個数: 192

約数和(自身を含む): 743029200

約数和(自身を除く): 485657680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 49, 56, 58, 64, 70, 80, 98, 112, 116, 128, 140, 145, 160, 196, 203, 224, 232, 245, 280, 283, 290, 320, 392, 406, 448, 464, 490, 560, 566, 580, 640, 784, 812, 896, 928, 980, 1015, 1120, 1132, 1160, 1415, 1421, 1568, 1624, 1856, 1960, 1981, 2030, 2240, 2264, 2320, 2830, 2842, 3136, 3248, 3712, 3920, 3962, 4060, 4480, 4528, 4640, 5660, 5684, 6272, 6496, 7105, 7840, 7924, 8120, 8207, 9056, 9280, 9905, 11320, 11368, 12992, 13867, 14210, 15680, 15848, 16240, 16414, 18112, 18560, 19810, 22640, 22736, 25984, 27734, 28420, 31360, 31696, 32480, 32828, 36224, 39620, 41035, 45280, 45472, 55468, 56840, 57449, 63392, 64960, 65656, 69335, 79240, 82070, 90560, 90944, 110936, 113680, 114898, 126784, 129920, 131312, 138670, 158480, 164140, 181120, 181888, 221872, 227360, 229796, 253568, 262624, 277340, 287245, 316960, 328280, 402143, 443744, 454720, 459592, 525248, 554680, 574490, 633920, 656560, 804286, 887488, 909440, 919184, 1050496, 1109360, 1148980, 1267840, 1313120, 1608572, 1774976, 1838368, 2010715, 2218720, 2297960, 2626240, 3217144, 3676736, 4021430, 4437440, 4595920, 5252480, 6434288, 7353472, 8042860, 8874880, 9191840, 12868576, 16085720, 18383680, 25737152, 32171440, 36767360, 51474304, 64342880, 128685760, 257371520]

約数ペア:

[(1, 257371520), (2, 128685760), (4, 64342880), (5, 51474304), (7, 36767360), (8, 32171440), (10, 25737152), (14, 18383680), (16, 16085720), (20, 12868576), (28, 9191840), (29, 8874880), (32, 8042860), (35, 7353472), (40, 6434288), (49, 5252480), (56, 4595920), (58, 4437440), (64, 4021430), (70, 3676736), (80, 3217144), (98, 2626240), (112, 2297960), (116, 2218720), (128, 2010715), (140, 1838368), (145, 1774976), (160, 1608572), (196, 1313120), (203, 1267840), (224, 1148980), (232, 1109360), (245, 1050496), (280, 919184), (283, 909440), (290, 887488), (320, 804286), (392, 656560), (406, 633920), (448, 574490), (464, 554680), (490, 525248), (560, 459592), (566, 454720), (580, 443744), (640, 402143), (784, 328280), (812, 316960), (896, 287245), (928, 277340), (980, 262624), (1015, 253568), (1120, 229796), (1132, 227360), (1160, 221872), (1415, 181888), (1421, 181120), (1568, 164140), (1624, 158480), (1856, 138670), (1960, 131312), (1981, 129920), (2030, 126784), (2240, 114898), (2264, 113680), (2320, 110936), (2830, 90944), (2842, 90560), (3136, 82070), (3248, 79240), (3712, 69335), (3920, 65656), (3962, 64960), (4060, 63392), (4480, 57449), (4528, 56840), (4640, 55468), (5660, 45472), (5684, 45280), (6272, 41035), (6496, 39620), (7105, 36224), (7840, 32828), (7924, 32480), (8120, 31696), (8207, 31360), (9056, 28420), (9280, 27734), (9905, 25984), (11320, 22736), (11368, 22640), (12992, 19810), (13867, 18560), (14210, 18112), (15680, 16414), (15848, 16240)]