28940860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1409}}^1$

素因数の和:1510

約数の個数: 48

約数和(自身を含む): 66326400

約数和(自身を除く): 37385540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1409, 1580, 2054, 2818, 4108, 5135, 5636, 7045, 10270, 14090, 18317, 20540, 28180, 36634, 73268, 91585, 111311, 183170, 222622, 366340, 445244, 556555, 1113110, 1447043, 2226220, 2894086, 5788172, 7235215, 14470430, 28940860]

約数ペア:

[(1, 28940860), (2, 14470430), (4, 7235215), (5, 5788172), (10, 2894086), (13, 2226220), (20, 1447043), (26, 1113110), (52, 556555), (65, 445244), (79, 366340), (130, 222622), (158, 183170), (260, 111311), (316, 91585), (395, 73268), (790, 36634), (1027, 28180), (1409, 20540), (1580, 18317), (2054, 14090), (2818, 10270), (4108, 7045), (5135, 5636)]