1280970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 3418272

約数和(自身を除く): 2137302

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 331, 387, 430, 645, 662, 774, 993, 1290, 1655, 1935, 1986, 2979, 3310, 3870, 4965, 5958, 9930, 14233, 14895, 28466, 29790, 42699, 71165, 85398, 128097, 142330, 213495, 256194, 426990, 640485, 1280970]

約数ペア:

[(1, 1280970), (2, 640485), (3, 426990), (5, 256194), (6, 213495), (9, 142330), (10, 128097), (15, 85398), (18, 71165), (30, 42699), (43, 29790), (45, 28466), (86, 14895), (90, 14233), (129, 9930), (215, 5958), (258, 4965), (331, 3870), (387, 3310), (430, 2979), (645, 1986), (662, 1935), (774, 1655), (993, 1290)]