218777780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1$

素因数の和:769

約数の個数: 96

約数和(自身を含む): 529388160

約数和(自身を除く): 310610380

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 67, 76, 95, 130, 134, 190, 247, 260, 268, 335, 380, 494, 661, 670, 871, 988, 1235, 1273, 1322, 1340, 1742, 2470, 2546, 2644, 3305, 3484, 4355, 4940, 5092, 6365, 6610, 8593, 8710, 12559, 12730, 13220, 16549, 17186, 17420, 25118, 25460, 33098, 34372, 42965, 44287, 50236, 62795, 66196, 82745, 85930, 88574, 125590, 163267, 165490, 171860, 177148, 221435, 251180, 326534, 330980, 442870, 575731, 653068, 816335, 841453, 885740, 1151462, 1632670, 1682906, 2302924, 2878655, 3265340, 3365812, 4207265, 5757310, 8414530, 10938889, 11514620, 16829060, 21877778, 43755556, 54694445, 109388890, 218777780]

約数ペア:

[(1, 218777780), (2, 109388890), (4, 54694445), (5, 43755556), (10, 21877778), (13, 16829060), (19, 11514620), (20, 10938889), (26, 8414530), (38, 5757310), (52, 4207265), (65, 3365812), (67, 3265340), (76, 2878655), (95, 2302924), (130, 1682906), (134, 1632670), (190, 1151462), (247, 885740), (260, 841453), (268, 816335), (335, 653068), (380, 575731), (494, 442870), (661, 330980), (670, 326534), (871, 251180), (988, 221435), (1235, 177148), (1273, 171860), (1322, 165490), (1340, 163267), (1742, 125590), (2470, 88574), (2546, 85930), (2644, 82745), (3305, 66196), (3484, 62795), (4355, 50236), (4940, 44287), (5092, 42965), (6365, 34372), (6610, 33098), (8593, 25460), (8710, 25118), (12559, 17420), (12730, 17186), (13220, 16549)]