820475880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7691}}^1$

素因数の和:7839

約数の個数: 128

約数和(自身を含む): 2835578880

約数和(自身を除く): 2015103000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 127, 140, 168, 210, 254, 280, 381, 420, 508, 635, 762, 840, 889, 1016, 1270, 1524, 1778, 1905, 2540, 2667, 3048, 3556, 3810, 4445, 5080, 5334, 7112, 7620, 7691, 8890, 10668, 13335, 15240, 15382, 17780, 21336, 23073, 26670, 30764, 35560, 38455, 46146, 53340, 53837, 61528, 76910, 92292, 106680, 107674, 115365, 153820, 161511, 184584, 215348, 230730, 269185, 307640, 323022, 430696, 461460, 538370, 646044, 807555, 922920, 976757, 1076740, 1292088, 1615110, 1953514, 2153480, 2930271, 3230220, 3907028, 4883785, 5860542, 6460440, 6837299, 7814056, 9767570, 11721084, 13674598, 14651355, 19535140, 20511897, 23442168, 27349196, 29302710, 34186495, 39070280, 41023794, 54698392, 58605420, 68372990, 82047588, 102559485, 117210840, 136745980, 164095176, 205118970, 273491960, 410237940, 820475880]

約数ペア:

[(1, 820475880), (2, 410237940), (3, 273491960), (4, 205118970), (5, 164095176), (6, 136745980), (7, 117210840), (8, 102559485), (10, 82047588), (12, 68372990), (14, 58605420), (15, 54698392), (20, 41023794), (21, 39070280), (24, 34186495), (28, 29302710), (30, 27349196), (35, 23442168), (40, 20511897), (42, 19535140), (56, 14651355), (60, 13674598), (70, 11721084), (84, 9767570), (105, 7814056), (120, 6837299), (127, 6460440), (140, 5860542), (168, 4883785), (210, 3907028), (254, 3230220), (280, 2930271), (381, 2153480), (420, 1953514), (508, 1615110), (635, 1292088), (762, 1076740), (840, 976757), (889, 922920), (1016, 807555), (1270, 646044), (1524, 538370), (1778, 461460), (1905, 430696), (2540, 323022), (2667, 307640), (3048, 269185), (3556, 230730), (3810, 215348), (4445, 184584), (5080, 161511), (5334, 153820), (7112, 115365), (7620, 107674), (7691, 106680), (8890, 92292), (10668, 76910), (13335, 61528), (15240, 53837), (15382, 53340), (17780, 46146), (21336, 38455), (23073, 35560), (26670, 30764)]