1999042820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{78517}}^1$

素因数の和:78612

約数の個数: 48

約数和(自身を含む): 4484948160

約数和(自身を除く): 2485905340

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 67, 76, 95, 134, 190, 268, 335, 380, 670, 1273, 1340, 2546, 5092, 6365, 12730, 25460, 78517, 157034, 314068, 392585, 785170, 1491823, 1570340, 2983646, 5260639, 5967292, 7459115, 10521278, 14918230, 21042556, 26303195, 29836460, 52606390, 99952141, 105212780, 199904282, 399808564, 499760705, 999521410, 1999042820]

約数ペア:

[(1, 1999042820), (2, 999521410), (4, 499760705), (5, 399808564), (10, 199904282), (19, 105212780), (20, 99952141), (38, 52606390), (67, 29836460), (76, 26303195), (95, 21042556), (134, 14918230), (190, 10521278), (268, 7459115), (335, 5967292), (380, 5260639), (670, 2983646), (1273, 1570340), (1340, 1491823), (2546, 785170), (5092, 392585), (6365, 314068), (12730, 157034), (25460, 78517)]