128416240

素因数分解:

$2^4\times 5^1\times {\mathrm{401}}^1\times {\mathrm{4003}}^1$

素因数の和:4417

約数の個数: 40

約数和(自身を含む): 299387088

約数和(自身を除く): 170970848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 401, 802, 1604, 2005, 3208, 4003, 4010, 6416, 8006, 8020, 16012, 16040, 20015, 32024, 32080, 40030, 64048, 80060, 160120, 320240, 1605203, 3210406, 6420812, 8026015, 12841624, 16052030, 25683248, 32104060, 64208120, 128416240]

約数ペア:

[(1, 128416240), (2, 64208120), (4, 32104060), (5, 25683248), (8, 16052030), (10, 12841624), (16, 8026015), (20, 6420812), (40, 3210406), (80, 1605203), (401, 320240), (802, 160120), (1604, 80060), (2005, 64048), (3208, 40030), (4003, 32080), (4010, 32024), (6416, 20015), (8006, 16040), (8020, 16012)]