20155600

素因数分解:

$2^4\times 5^2\times {\mathrm{41}}^1\times {\mathrm{1229}}^1$

素因数の和:1288

約数の個数: 60

約数和(自身を含む): 49645260

約数和(自身を除く): 29489660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 164, 200, 205, 328, 400, 410, 656, 820, 1025, 1229, 1640, 2050, 2458, 3280, 4100, 4916, 6145, 8200, 9832, 12290, 16400, 19664, 24580, 30725, 49160, 50389, 61450, 98320, 100778, 122900, 201556, 245800, 251945, 403112, 491600, 503890, 806224, 1007780, 1259725, 2015560, 2519450, 4031120, 5038900, 10077800, 20155600]

約数ペア:

[(1, 20155600), (2, 10077800), (4, 5038900), (5, 4031120), (8, 2519450), (10, 2015560), (16, 1259725), (20, 1007780), (25, 806224), (40, 503890), (41, 491600), (50, 403112), (80, 251945), (82, 245800), (100, 201556), (164, 122900), (200, 100778), (205, 98320), (328, 61450), (400, 50389), (410, 49160), (656, 30725), (820, 24580), (1025, 19664), (1229, 16400), (1640, 12290), (2050, 9832), (2458, 8200), (3280, 6145), (4100, 4916)]