392840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:102

約数の個数: 64

約数和(自身を含む): 1071360

約数和(自身を除く): 678520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 61, 70, 92, 115, 122, 140, 161, 184, 230, 244, 280, 305, 322, 427, 460, 488, 610, 644, 805, 854, 920, 1220, 1288, 1403, 1610, 1708, 2135, 2440, 2806, 3220, 3416, 4270, 5612, 6440, 7015, 8540, 9821, 11224, 14030, 17080, 19642, 28060, 39284, 49105, 56120, 78568, 98210, 196420, 392840]

約数ペア:

[(1, 392840), (2, 196420), (4, 98210), (5, 78568), (7, 56120), (8, 49105), (10, 39284), (14, 28060), (20, 19642), (23, 17080), (28, 14030), (35, 11224), (40, 9821), (46, 8540), (56, 7015), (61, 6440), (70, 5612), (92, 4270), (115, 3416), (122, 3220), (140, 2806), (161, 2440), (184, 2135), (230, 1708), (244, 1610), (280, 1403), (305, 1288), (322, 1220), (427, 920), (460, 854), (488, 805), (610, 644)]