128874440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{2417}}^1$

素因数の和:2502

約数の個数: 64

約数和(自身を含む): 306408960

約数和(自身を除く): 177534520

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, 2417, 2666, 4834, 5332, 6665, 9668, 10664, 12085, 13330, 19336, 24170, 26660, 48340, 53320, 74927, 96680, 103931, 149854, 207862, 299708, 374635, 415724, 519655, 599416, 749270, 831448, 1039310, 1498540, 2078620, 2997080, 3221861, 4157240, 6443722, 12887444, 16109305, 25774888, 32218610, 64437220, 128874440]

約数ペア:

[(1, 128874440), (2, 64437220), (4, 32218610), (5, 25774888), (8, 16109305), (10, 12887444), (20, 6443722), (31, 4157240), (40, 3221861), (43, 2997080), (62, 2078620), (86, 1498540), (124, 1039310), (155, 831448), (172, 749270), (215, 599416), (248, 519655), (310, 415724), (344, 374635), (430, 299708), (620, 207862), (860, 149854), (1240, 103931), (1333, 96680), (1720, 74927), (2417, 53320), (2666, 48340), (4834, 26660), (5332, 24170), (6665, 19336), (9668, 13330), (10664, 12085)]