128938940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:691

約数の個数: 96

約数和(自身を含む): 314603520

約数和(自身を除く): 185664580

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 43, 52, 65, 76, 86, 95, 130, 172, 190, 215, 247, 260, 380, 430, 494, 559, 607, 817, 860, 988, 1118, 1214, 1235, 1634, 2236, 2428, 2470, 2795, 3035, 3268, 4085, 4940, 5590, 6070, 7891, 8170, 10621, 11180, 11533, 12140, 15782, 16340, 21242, 23066, 26101, 31564, 39455, 42484, 46132, 52202, 53105, 57665, 78910, 104404, 106210, 115330, 130505, 149929, 157820, 212420, 230660, 261010, 299858, 339313, 495919, 522020, 599716, 678626, 749645, 991838, 1357252, 1499290, 1696565, 1983676, 2479595, 2998580, 3393130, 4959190, 6446947, 6786260, 9918380, 12893894, 25787788, 32234735, 64469470, 128938940]

約数ペア:

[(1, 128938940), (2, 64469470), (4, 32234735), (5, 25787788), (10, 12893894), (13, 9918380), (19, 6786260), (20, 6446947), (26, 4959190), (38, 3393130), (43, 2998580), (52, 2479595), (65, 1983676), (76, 1696565), (86, 1499290), (95, 1357252), (130, 991838), (172, 749645), (190, 678626), (215, 599716), (247, 522020), (260, 495919), (380, 339313), (430, 299858), (494, 261010), (559, 230660), (607, 212420), (817, 157820), (860, 149929), (988, 130505), (1118, 115330), (1214, 106210), (1235, 104404), (1634, 78910), (2236, 57665), (2428, 53105), (2470, 52202), (2795, 46132), (3035, 42484), (3268, 39455), (4085, 31564), (4940, 26101), (5590, 23066), (6070, 21242), (7891, 16340), (8170, 15782), (10621, 12140), (11180, 11533)]