204899380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{419}}^1\times {\mathrm{499}}^1$

素因数の和:941

約数の個数: 72

約数和(自身を含む): 502740000

約数和(自身を除く): 297840620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 419, 490, 499, 838, 980, 998, 1676, 1996, 2095, 2495, 2933, 3493, 4190, 4990, 5866, 6986, 8380, 9980, 11732, 13972, 14665, 17465, 20531, 24451, 29330, 34930, 41062, 48902, 58660, 69860, 82124, 97804, 102655, 122255, 205310, 209081, 244510, 410620, 418162, 489020, 836324, 1045405, 1463567, 2090810, 2927134, 4181620, 5854268, 7317835, 10244969, 14635670, 20489938, 29271340, 40979876, 51224845, 102449690, 204899380]

約数ペア:

[(1, 204899380), (2, 102449690), (4, 51224845), (5, 40979876), (7, 29271340), (10, 20489938), (14, 14635670), (20, 10244969), (28, 7317835), (35, 5854268), (49, 4181620), (70, 2927134), (98, 2090810), (140, 1463567), (196, 1045405), (245, 836324), (419, 489020), (490, 418162), (499, 410620), (838, 244510), (980, 209081), (998, 205310), (1676, 122255), (1996, 102655), (2095, 97804), (2495, 82124), (2933, 69860), (3493, 58660), (4190, 48902), (4990, 41062), (5866, 34930), (6986, 29330), (8380, 24451), (9980, 20531), (11732, 17465), (13972, 14665)]