71221975

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 104100480

約数和(自身を除く): 32878505

約数列:

[1, 5, 11, 19, 25, 43, 55, 95, 209, 215, 275, 317, 473, 475, 817, 1045, 1075, 1585, 2365, 3487, 4085, 5225, 6023, 7925, 8987, 11825, 13631, 17435, 20425, 30115, 44935, 66253, 68155, 87175, 149941, 150575, 224675, 258989, 331265, 340775, 749705, 1294945, 1656325, 2848879, 3748525, 6474725, 14244395, 71221975]

約数ペア:

[(1, 71221975), (5, 14244395), (11, 6474725), (19, 3748525), (25, 2848879), (43, 1656325), (55, 1294945), (95, 749705), (209, 340775), (215, 331265), (275, 258989), (317, 224675), (473, 150575), (475, 149941), (817, 87175), (1045, 68155), (1075, 66253), (1585, 44935), (2365, 30115), (3487, 20425), (4085, 17435), (5225, 13631), (6023, 11825), (7925, 8987)]