131442920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{469439}}^1$

素因数の和:469457

約数の個数: 32

約数和(自身を含む): 337996800

約数和(自身を除く): 206553880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 469439, 938878, 1877756, 2347195, 3286073, 3755512, 4694390, 6572146, 9388780, 13144292, 16430365, 18777560, 26288584, 32860730, 65721460, 131442920]

約数ペア:

[(1, 131442920), (2, 65721460), (4, 32860730), (5, 26288584), (7, 18777560), (8, 16430365), (10, 13144292), (14, 9388780), (20, 6572146), (28, 4694390), (35, 3755512), (40, 3286073), (56, 2347195), (70, 1877756), (140, 938878), (280, 469439)]