25288780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1619}}^1$

素因数の和:1710

約数の個数: 48

約数和(自身を含む): 58786560

約数和(自身を除く): 33497780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 1619, 3124, 3238, 3905, 6476, 7810, 8095, 15620, 16190, 17809, 32380, 35618, 71236, 89045, 114949, 178090, 229898, 356180, 459796, 574745, 1149490, 1264439, 2298980, 2528878, 5057756, 6322195, 12644390, 25288780]

約数ペア:

[(1, 25288780), (2, 12644390), (4, 6322195), (5, 5057756), (10, 2528878), (11, 2298980), (20, 1264439), (22, 1149490), (44, 574745), (55, 459796), (71, 356180), (110, 229898), (142, 178090), (220, 114949), (284, 89045), (355, 71236), (710, 35618), (781, 32380), (1420, 17809), (1562, 16190), (1619, 15620), (3124, 8095), (3238, 7810), (3905, 6476)]