305340880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{887}}^1$

素因数の和:1244

約数の個数: 80

約数和(自身を含む): 767700864

約数和(自身を除く): 462359984

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 331, 520, 662, 887, 1040, 1324, 1655, 1774, 2648, 3310, 3548, 4303, 4435, 5296, 6620, 7096, 8606, 8870, 11531, 13240, 14192, 17212, 17740, 21515, 23062, 26480, 34424, 35480, 43030, 46124, 57655, 68848, 70960, 86060, 92248, 115310, 172120, 184496, 230620, 293597, 344240, 461240, 587194, 922480, 1174388, 1467985, 2348776, 2935970, 3816761, 4697552, 5871940, 7633522, 11743880, 15267044, 19083805, 23487760, 30534088, 38167610, 61068176, 76335220, 152670440, 305340880]

約数ペア:

[(1, 305340880), (2, 152670440), (4, 76335220), (5, 61068176), (8, 38167610), (10, 30534088), (13, 23487760), (16, 19083805), (20, 15267044), (26, 11743880), (40, 7633522), (52, 5871940), (65, 4697552), (80, 3816761), (104, 2935970), (130, 2348776), (208, 1467985), (260, 1174388), (331, 922480), (520, 587194), (662, 461240), (887, 344240), (1040, 293597), (1324, 230620), (1655, 184496), (1774, 172120), (2648, 115310), (3310, 92248), (3548, 86060), (4303, 70960), (4435, 68848), (5296, 57655), (6620, 46124), (7096, 43030), (8606, 35480), (8870, 34424), (11531, 26480), (13240, 23062), (14192, 21515), (17212, 17740)]