28217840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1229}}^1$

素因数の和:1290

約数の個数: 80

約数和(自身を含む): 76870080

約数和(自身を除く): 48652240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 1148, 1229, 1435, 1640, 2296, 2458, 2870, 3280, 4592, 4916, 5740, 6145, 8603, 9832, 11480, 12290, 17206, 19664, 22960, 24580, 34412, 43015, 49160, 50389, 68824, 86030, 98320, 100778, 137648, 172060, 201556, 251945, 344120, 352723, 403112, 503890, 688240, 705446, 806224, 1007780, 1410892, 1763615, 2015560, 2821784, 3527230, 4031120, 5643568, 7054460, 14108920, 28217840]

約数ペア:

[(1, 28217840), (2, 14108920), (4, 7054460), (5, 5643568), (7, 4031120), (8, 3527230), (10, 2821784), (14, 2015560), (16, 1763615), (20, 1410892), (28, 1007780), (35, 806224), (40, 705446), (41, 688240), (56, 503890), (70, 403112), (80, 352723), (82, 344120), (112, 251945), (140, 201556), (164, 172060), (205, 137648), (280, 100778), (287, 98320), (328, 86030), (410, 68824), (560, 50389), (574, 49160), (656, 43015), (820, 34412), (1148, 24580), (1229, 22960), (1435, 19664), (1640, 17206), (2296, 12290), (2458, 11480), (2870, 9832), (3280, 8603), (4592, 6145), (4916, 5740)]