81971800

素因数分解:

$2^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{6719}}^1$

素因数の和:6796

約数の個数: 48

約数和(自身を含む): 193737600

約数和(自身を除く): 111765800

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 61, 100, 122, 200, 244, 305, 488, 610, 1220, 1525, 2440, 3050, 6100, 6719, 12200, 13438, 26876, 33595, 53752, 67190, 134380, 167975, 268760, 335950, 409859, 671900, 819718, 1343800, 1639436, 2049295, 3278872, 4098590, 8197180, 10246475, 16394360, 20492950, 40985900, 81971800]

約数ペア:

[(1, 81971800), (2, 40985900), (4, 20492950), (5, 16394360), (8, 10246475), (10, 8197180), (20, 4098590), (25, 3278872), (40, 2049295), (50, 1639436), (61, 1343800), (100, 819718), (122, 671900), (200, 409859), (244, 335950), (305, 268760), (488, 167975), (610, 134380), (1220, 67190), (1525, 53752), (2440, 33595), (3050, 26876), (6100, 13438), (6719, 12200)]