81034520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12583}}^1$

素因数の和:12624

約数の個数: 64

約数和(自身を含む): 217451520

約数和(自身を除く): 136417000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 12583, 25166, 50332, 62915, 88081, 100664, 125830, 176162, 251660, 289409, 352324, 440405, 503320, 578818, 704648, 880810, 1157636, 1447045, 1761620, 2025863, 2315272, 2894090, 3523240, 4051726, 5788180, 8103452, 10129315, 11576360, 16206904, 20258630, 40517260, 81034520]

約数ペア:

[(1, 81034520), (2, 40517260), (4, 20258630), (5, 16206904), (7, 11576360), (8, 10129315), (10, 8103452), (14, 5788180), (20, 4051726), (23, 3523240), (28, 2894090), (35, 2315272), (40, 2025863), (46, 1761620), (56, 1447045), (70, 1157636), (92, 880810), (115, 704648), (140, 578818), (161, 503320), (184, 440405), (230, 352324), (280, 289409), (322, 251660), (460, 176162), (644, 125830), (805, 100664), (920, 88081), (1288, 62915), (1610, 50332), (3220, 25166), (6440, 12583)]