4000780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 10420704

約数和(自身を除く): 6419924

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 41, 68, 70, 82, 85, 119, 140, 164, 170, 205, 238, 287, 340, 410, 476, 574, 595, 697, 820, 1148, 1190, 1394, 1435, 1681, 2380, 2788, 2870, 3362, 3485, 4879, 5740, 6724, 6970, 8405, 9758, 11767, 13940, 16810, 19516, 23534, 24395, 28577, 33620, 47068, 48790, 57154, 58835, 97580, 114308, 117670, 142885, 200039, 235340, 285770, 400078, 571540, 800156, 1000195, 2000390, 4000780]

約数ペア:

[(1, 4000780), (2, 2000390), (4, 1000195), (5, 800156), (7, 571540), (10, 400078), (14, 285770), (17, 235340), (20, 200039), (28, 142885), (34, 117670), (35, 114308), (41, 97580), (68, 58835), (70, 57154), (82, 48790), (85, 47068), (119, 33620), (140, 28577), (164, 24395), (170, 23534), (205, 19516), (238, 16810), (287, 13940), (340, 11767), (410, 9758), (476, 8405), (574, 6970), (595, 6724), (697, 5740), (820, 4879), (1148, 3485), (1190, 3362), (1394, 2870), (1435, 2788), (1681, 2380)]