128762840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103841}}^1$

素因数の和:103883

約数の個数: 32

約数和(自身を含む): 299064960

約数和(自身を除く): 170302120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 103841, 207682, 415364, 519205, 830728, 1038410, 2076820, 3219071, 4153640, 6438142, 12876284, 16095355, 25752568, 32190710, 64381420, 128762840]

約数ペア:

[(1, 128762840), (2, 64381420), (4, 32190710), (5, 25752568), (8, 16095355), (10, 12876284), (20, 6438142), (31, 4153640), (40, 3219071), (62, 2076820), (124, 1038410), (155, 830728), (248, 519205), (310, 415364), (620, 207682), (1240, 103841)]