638656128

素因数分解:

$2^7\times 3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:631

約数の個数: 192

約数和(自身を含む): 2028780000

約数和(自身を除く): 1390123872

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 32, 33, 36, 44, 48, 64, 66, 72, 88, 96, 99, 101, 128, 132, 144, 176, 192, 198, 202, 264, 288, 303, 352, 384, 396, 404, 499, 528, 576, 606, 704, 792, 808, 909, 998, 1056, 1111, 1152, 1212, 1408, 1497, 1584, 1616, 1818, 1996, 2112, 2222, 2424, 2994, 3168, 3232, 3333, 3636, 3992, 4224, 4444, 4491, 4848, 5489, 5988, 6336, 6464, 6666, 7272, 7984, 8888, 8982, 9696, 9999, 10978, 11976, 12672, 12928, 13332, 14544, 15968, 16467, 17776, 17964, 19392, 19998, 21956, 23952, 26664, 29088, 31936, 32934, 35552, 35928, 38784, 39996, 43912, 47904, 49401, 50399, 53328, 58176, 63872, 65868, 71104, 71856, 79992, 87824, 95808, 98802, 100798, 106656, 116352, 131736, 142208, 143712, 151197, 159984, 175648, 191616, 197604, 201596, 213312, 263472, 287424, 302394, 319968, 351296, 395208, 403192, 426624, 453591, 526944, 554389, 574848, 604788, 639936, 702592, 790416, 806384, 907182, 1053888, 1108778, 1209576, 1279872, 1580832, 1612768, 1663167, 1814364, 2107776, 2217556, 2419152, 3161664, 3225536, 3326334, 3628728, 4435112, 4838304, 4989501, 6323328, 6451072, 6652668, 7257456, 8870224, 9676608, 9979002, 13305336, 14514912, 17740448, 19353216, 19958004, 26610672, 29029824, 35480896, 39916008, 53221344, 58059648, 70961792, 79832016, 106442688, 159664032, 212885376, 319328064, 638656128]

約数ペア:

[(1, 638656128), (2, 319328064), (3, 212885376), (4, 159664032), (6, 106442688), (8, 79832016), (9, 70961792), (11, 58059648), (12, 53221344), (16, 39916008), (18, 35480896), (22, 29029824), (24, 26610672), (32, 19958004), (33, 19353216), (36, 17740448), (44, 14514912), (48, 13305336), (64, 9979002), (66, 9676608), (72, 8870224), (88, 7257456), (96, 6652668), (99, 6451072), (101, 6323328), (128, 4989501), (132, 4838304), (144, 4435112), (176, 3628728), (192, 3326334), (198, 3225536), (202, 3161664), (264, 2419152), (288, 2217556), (303, 2107776), (352, 1814364), (384, 1663167), (396, 1612768), (404, 1580832), (499, 1279872), (528, 1209576), (576, 1108778), (606, 1053888), (704, 907182), (792, 806384), (808, 790416), (909, 702592), (998, 639936), (1056, 604788), (1111, 574848), (1152, 554389), (1212, 526944), (1408, 453591), (1497, 426624), (1584, 403192), (1616, 395208), (1818, 351296), (1996, 319968), (2112, 302394), (2222, 287424), (2424, 263472), (2994, 213312), (3168, 201596), (3232, 197604), (3333, 191616), (3636, 175648), (3992, 159984), (4224, 151197), (4444, 143712), (4491, 142208), (4848, 131736), (5489, 116352), (5988, 106656), (6336, 100798), (6464, 98802), (6666, 95808), (7272, 87824), (7984, 79992), (8888, 71856), (8982, 71104), (9696, 65868), (9999, 63872), (10978, 58176), (11976, 53328), (12672, 50399), (12928, 49401), (13332, 47904), (14544, 43912), (15968, 39996), (16467, 38784), (17776, 35928), (17964, 35552), (19392, 32934), (19998, 31936), (21956, 29088), (23952, 26664)]