31177720

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{15907}}^1$

素因数の和:15932

約数の個数: 48

約数和(自身を含む): 81608040

約数和(自身を除く): 50430320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 15907, 31814, 63628, 79535, 111349, 127256, 159070, 222698, 318140, 445396, 556745, 636280, 779443, 890792, 1113490, 1558886, 2226980, 3117772, 3897215, 4453960, 6235544, 7794430, 15588860, 31177720]

約数ペア:

[(1, 31177720), (2, 15588860), (4, 7794430), (5, 6235544), (7, 4453960), (8, 3897215), (10, 3117772), (14, 2226980), (20, 1558886), (28, 1113490), (35, 890792), (40, 779443), (49, 636280), (56, 556745), (70, 445396), (98, 318140), (140, 222698), (196, 159070), (245, 127256), (280, 111349), (392, 79535), (490, 63628), (980, 31814), (1960, 15907)]