31146920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{643}}^1$

素因数の和:834

約数の個数: 64

約数和(自身を含む): 80680320

約数和(自身を除く): 49533400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 173, 280, 346, 643, 692, 865, 1211, 1286, 1384, 1730, 2422, 2572, 3215, 3460, 4501, 4844, 5144, 6055, 6430, 6920, 9002, 9688, 12110, 12860, 18004, 22505, 24220, 25720, 36008, 45010, 48440, 90020, 111239, 180040, 222478, 444956, 556195, 778673, 889912, 1112390, 1557346, 2224780, 3114692, 3893365, 4449560, 6229384, 7786730, 15573460, 31146920]

約数ペア:

[(1, 31146920), (2, 15573460), (4, 7786730), (5, 6229384), (7, 4449560), (8, 3893365), (10, 3114692), (14, 2224780), (20, 1557346), (28, 1112390), (35, 889912), (40, 778673), (56, 556195), (70, 444956), (140, 222478), (173, 180040), (280, 111239), (346, 90020), (643, 48440), (692, 45010), (865, 36008), (1211, 25720), (1286, 24220), (1384, 22505), (1730, 18004), (2422, 12860), (2572, 12110), (3215, 9688), (3460, 9002), (4501, 6920), (4844, 6430), (5144, 6055)]