21067850

素因数分解:

$2^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1$

素因数の和:335

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 20179510

約数列:

[1, 2, 5, 10, 25, 41, 43, 50, 82, 86, 205, 215, 239, 410, 430, 478, 1025, 1075, 1195, 1763, 2050, 2150, 2390, 3526, 5975, 8815, 9799, 10277, 11950, 17630, 19598, 20554, 44075, 48995, 51385, 88150, 97990, 102770, 244975, 256925, 421357, 489950, 513850, 842714, 2106785, 4213570, 10533925, 21067850]

約数ペア:

[(1, 21067850), (2, 10533925), (5, 4213570), (10, 2106785), (25, 842714), (41, 513850), (43, 489950), (50, 421357), (82, 256925), (86, 244975), (205, 102770), (215, 97990), (239, 88150), (410, 51385), (430, 48995), (478, 44075), (1025, 20554), (1075, 19598), (1195, 17630), (1763, 11950), (2050, 10277), (2150, 9799), (2390, 8815), (3526, 5975)]