21965412

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:241

約数の個数: 96

約数和(自身を含む): 61931520

約数和(自身を除く): 39966108

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 42, 58, 71, 84, 87, 116, 127, 142, 174, 203, 213, 254, 284, 348, 381, 406, 426, 497, 508, 609, 762, 812, 852, 889, 994, 1218, 1491, 1524, 1778, 1988, 2059, 2436, 2667, 2982, 3556, 3683, 4118, 5334, 5964, 6177, 7366, 8236, 9017, 10668, 11049, 12354, 14413, 14732, 18034, 22098, 24708, 25781, 27051, 28826, 36068, 43239, 44196, 51562, 54102, 57652, 63119, 77343, 86478, 103124, 108204, 126238, 154686, 172956, 189357, 252476, 261493, 309372, 378714, 522986, 757428, 784479, 1045972, 1568958, 1830451, 3137916, 3660902, 5491353, 7321804, 10982706, 21965412]

約数ペア:

[(1, 21965412), (2, 10982706), (3, 7321804), (4, 5491353), (6, 3660902), (7, 3137916), (12, 1830451), (14, 1568958), (21, 1045972), (28, 784479), (29, 757428), (42, 522986), (58, 378714), (71, 309372), (84, 261493), (87, 252476), (116, 189357), (127, 172956), (142, 154686), (174, 126238), (203, 108204), (213, 103124), (254, 86478), (284, 77343), (348, 63119), (381, 57652), (406, 54102), (426, 51562), (497, 44196), (508, 43239), (609, 36068), (762, 28826), (812, 27051), (852, 25781), (889, 24708), (994, 22098), (1218, 18034), (1491, 14732), (1524, 14413), (1778, 12354), (1988, 11049), (2059, 10668), (2436, 9017), (2667, 8236), (2982, 7366), (3556, 6177), (3683, 5964), (4118, 5334)]