28393820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15601}}^1$

素因数の和:15630

約数の個数: 48

約数和(自身を含む): 73391808

約数和(自身を除く): 44997988

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 15601, 31202, 62404, 78005, 109207, 156010, 202813, 218414, 312020, 405626, 436828, 546035, 811252, 1014065, 1092070, 1419691, 2028130, 2184140, 2839382, 4056260, 5678764, 7098455, 14196910, 28393820]

約数ペア:

[(1, 28393820), (2, 14196910), (4, 7098455), (5, 5678764), (7, 4056260), (10, 2839382), (13, 2184140), (14, 2028130), (20, 1419691), (26, 1092070), (28, 1014065), (35, 811252), (52, 546035), (65, 436828), (70, 405626), (91, 312020), (130, 218414), (140, 202813), (182, 156010), (260, 109207), (364, 78005), (455, 62404), (910, 31202), (1820, 15601)]