128554520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2411}}^1$

素因数の和:2496

約数の個数: 64

約数和(自身を含む): 305648640

約数和(自身を除く): 177094120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 620, 860, 1240, 1333, 1720, 2411, 2666, 4822, 5332, 6665, 9644, 10664, 12055, 13330, 19288, 24110, 26660, 48220, 53320, 74741, 96440, 103673, 149482, 207346, 298964, 373705, 414692, 518365, 597928, 747410, 829384, 1036730, 1494820, 2073460, 2989640, 3213863, 4146920, 6427726, 12855452, 16069315, 25710904, 32138630, 64277260, 128554520]

約数ペア:

[(1, 128554520), (2, 64277260), (4, 32138630), (5, 25710904), (8, 16069315), (10, 12855452), (20, 6427726), (31, 4146920), (40, 3213863), (43, 2989640), (62, 2073460), (86, 1494820), (124, 1036730), (155, 829384), (172, 747410), (215, 597928), (248, 518365), (310, 414692), (344, 373705), (430, 298964), (620, 207346), (860, 149482), (1240, 103673), (1333, 96440), (1720, 74741), (2411, 53320), (2666, 48220), (4822, 26660), (5332, 24110), (6665, 19288), (9644, 13330), (10664, 12055)]