81519928

素因数分解:

$2^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:221

約数の個数: 96

約数和(自身を含む): 188373600

約数和(自身を除く): 106853672

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 49, 56, 58, 71, 98, 101, 116, 142, 196, 202, 203, 232, 284, 392, 404, 406, 497, 568, 707, 808, 812, 994, 1414, 1421, 1624, 1988, 2059, 2828, 2842, 2929, 3479, 3976, 4118, 4949, 5656, 5684, 5858, 6958, 7171, 8236, 9898, 11368, 11716, 13916, 14342, 14413, 16472, 19796, 20503, 23432, 27832, 28684, 28826, 39592, 41006, 50197, 57368, 57652, 82012, 100394, 100891, 115304, 143521, 164024, 200788, 201782, 207959, 287042, 351379, 401576, 403564, 415918, 574084, 702758, 807128, 831836, 1148168, 1405516, 1455713, 1663672, 2811032, 2911426, 5822852, 10189991, 11645704, 20379982, 40759964, 81519928]

約数ペア:

[(1, 81519928), (2, 40759964), (4, 20379982), (7, 11645704), (8, 10189991), (14, 5822852), (28, 2911426), (29, 2811032), (49, 1663672), (56, 1455713), (58, 1405516), (71, 1148168), (98, 831836), (101, 807128), (116, 702758), (142, 574084), (196, 415918), (202, 403564), (203, 401576), (232, 351379), (284, 287042), (392, 207959), (404, 201782), (406, 200788), (497, 164024), (568, 143521), (707, 115304), (808, 100891), (812, 100394), (994, 82012), (1414, 57652), (1421, 57368), (1624, 50197), (1988, 41006), (2059, 39592), (2828, 28826), (2842, 28684), (2929, 27832), (3479, 23432), (3976, 20503), (4118, 19796), (4949, 16472), (5656, 14413), (5684, 14342), (5858, 13916), (6958, 11716), (7171, 11368), (8236, 9898)]