989800

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{101}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 2703510

約数和(自身を除く): 1713710

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 101, 140, 175, 196, 200, 202, 245, 280, 350, 392, 404, 490, 505, 700, 707, 808, 980, 1010, 1225, 1400, 1414, 1960, 2020, 2450, 2525, 2828, 3535, 4040, 4900, 4949, 5050, 5656, 7070, 9800, 9898, 10100, 14140, 17675, 19796, 20200, 24745, 28280, 35350, 39592, 49490, 70700, 98980, 123725, 141400, 197960, 247450, 494900, 989800]

約数ペア:

[(1, 989800), (2, 494900), (4, 247450), (5, 197960), (7, 141400), (8, 123725), (10, 98980), (14, 70700), (20, 49490), (25, 39592), (28, 35350), (35, 28280), (40, 24745), (49, 20200), (50, 19796), (56, 17675), (70, 14140), (98, 10100), (100, 9898), (101, 9800), (140, 7070), (175, 5656), (196, 5050), (200, 4949), (202, 4900), (245, 4040), (280, 3535), (350, 2828), (392, 2525), (404, 2450), (490, 2020), (505, 1960), (700, 1414), (707, 1400), (808, 1225), (980, 1010)]