487900

素因数分解:

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

素因数の和:79

約数の個数: 72

約数和(自身を含む): 1312416

約数和(自身を除く): 824516

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 25, 28, 34, 35, 41, 50, 68, 70, 82, 85, 100, 119, 140, 164, 170, 175, 205, 238, 287, 340, 350, 410, 425, 476, 574, 595, 697, 700, 820, 850, 1025, 1148, 1190, 1394, 1435, 1700, 2050, 2380, 2788, 2870, 2975, 3485, 4100, 4879, 5740, 5950, 6970, 7175, 9758, 11900, 13940, 14350, 17425, 19516, 24395, 28700, 34850, 48790, 69700, 97580, 121975, 243950, 487900]

約数ペア:

[(1, 487900), (2, 243950), (4, 121975), (5, 97580), (7, 69700), (10, 48790), (14, 34850), (17, 28700), (20, 24395), (25, 19516), (28, 17425), (34, 14350), (35, 13940), (41, 11900), (50, 9758), (68, 7175), (70, 6970), (82, 5950), (85, 5740), (100, 4879), (119, 4100), (140, 3485), (164, 2975), (170, 2870), (175, 2788), (205, 2380), (238, 2050), (287, 1700), (340, 1435), (350, 1394), (410, 1190), (425, 1148), (476, 1025), (574, 850), (595, 820), (697, 700)]