857660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 1979040

約数和(自身を除く): 1121380

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 61, 74, 76, 95, 122, 148, 185, 190, 244, 305, 370, 380, 610, 703, 740, 1159, 1220, 1406, 2257, 2318, 2812, 3515, 4514, 4636, 5795, 7030, 9028, 11285, 11590, 14060, 22570, 23180, 42883, 45140, 85766, 171532, 214415, 428830, 857660]

約数ペア:

[(1, 857660), (2, 428830), (4, 214415), (5, 171532), (10, 85766), (19, 45140), (20, 42883), (37, 23180), (38, 22570), (61, 14060), (74, 11590), (76, 11285), (95, 9028), (122, 7030), (148, 5795), (185, 4636), (190, 4514), (244, 3515), (305, 2812), (370, 2318), (380, 2257), (610, 1406), (703, 1220), (740, 1159)]