25578440

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4073}}^1$

素因数の和:4241

約数の個数: 32

約数和(自身を含む): 57932280

約数和(自身を除く): 32353840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 4073, 6280, 8146, 16292, 20365, 32584, 40730, 81460, 162920, 639461, 1278922, 2557844, 3197305, 5115688, 6394610, 12789220, 25578440]

約数ペア:

[(1, 25578440), (2, 12789220), (4, 6394610), (5, 5115688), (8, 3197305), (10, 2557844), (20, 1278922), (40, 639461), (157, 162920), (314, 81460), (628, 40730), (785, 32584), (1256, 20365), (1570, 16292), (3140, 8146), (4073, 6280)]