31123120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{373}}^1$

素因数の和:542

約数の個数: 80

約数和(自身を含む): 83476800

約数和(自身を除く): 52353680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 149, 280, 298, 373, 560, 596, 745, 746, 1043, 1192, 1490, 1492, 1865, 2086, 2384, 2611, 2980, 2984, 3730, 4172, 5215, 5222, 5960, 5968, 7460, 8344, 10430, 10444, 11920, 13055, 14920, 16688, 20860, 20888, 26110, 29840, 41720, 41776, 52220, 55577, 83440, 104440, 111154, 208880, 222308, 277885, 389039, 444616, 555770, 778078, 889232, 1111540, 1556156, 1945195, 2223080, 3112312, 3890390, 4446160, 6224624, 7780780, 15561560, 31123120]

約数ペア:

[(1, 31123120), (2, 15561560), (4, 7780780), (5, 6224624), (7, 4446160), (8, 3890390), (10, 3112312), (14, 2223080), (16, 1945195), (20, 1556156), (28, 1111540), (35, 889232), (40, 778078), (56, 555770), (70, 444616), (80, 389039), (112, 277885), (140, 222308), (149, 208880), (280, 111154), (298, 104440), (373, 83440), (560, 55577), (596, 52220), (745, 41776), (746, 41720), (1043, 29840), (1192, 26110), (1490, 20888), (1492, 20860), (1865, 16688), (2086, 14920), (2384, 13055), (2611, 11920), (2980, 10444), (2984, 10430), (3730, 8344), (4172, 7460), (5215, 5968), (5222, 5960)]