128221456

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:452

約数の個数: 80

約数和(自身を含む): 284553216

約数和(自身を除く): 156331760

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 71, 88, 124, 142, 176, 248, 284, 331, 341, 496, 568, 662, 682, 781, 1136, 1324, 1364, 1562, 2201, 2648, 2728, 3124, 3641, 4402, 5296, 5456, 6248, 7282, 8804, 10261, 12496, 14564, 17608, 20522, 23501, 24211, 29128, 35216, 41044, 47002, 48422, 58256, 82088, 94004, 96844, 112871, 164176, 188008, 193688, 225742, 258511, 376016, 387376, 451484, 517022, 728531, 902968, 1034044, 1457062, 1805936, 2068088, 2914124, 4136176, 5828248, 8013841, 11656496, 16027682, 32055364, 64110728, 128221456]

約数ペア:

[(1, 128221456), (2, 64110728), (4, 32055364), (8, 16027682), (11, 11656496), (16, 8013841), (22, 5828248), (31, 4136176), (44, 2914124), (62, 2068088), (71, 1805936), (88, 1457062), (124, 1034044), (142, 902968), (176, 728531), (248, 517022), (284, 451484), (331, 387376), (341, 376016), (496, 258511), (568, 225742), (662, 193688), (682, 188008), (781, 164176), (1136, 112871), (1324, 96844), (1364, 94004), (1562, 82088), (2201, 58256), (2648, 48422), (2728, 47002), (3124, 41044), (3641, 35216), (4402, 29128), (5296, 24211), (5456, 23501), (6248, 20522), (7282, 17608), (8804, 14564), (10261, 12496)]