19416020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1409}}^1$

素因数の和:1484

約数の個数: 48

約数和(自身を含む): 44770320

約数和(自身を除く): 25354300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 1409, 2756, 2818, 3445, 5636, 6890, 7045, 13780, 14090, 18317, 28180, 36634, 73268, 74677, 91585, 149354, 183170, 298708, 366340, 373385, 746770, 970801, 1493540, 1941602, 3883204, 4854005, 9708010, 19416020]

約数ペア:

[(1, 19416020), (2, 9708010), (4, 4854005), (5, 3883204), (10, 1941602), (13, 1493540), (20, 970801), (26, 746770), (52, 373385), (53, 366340), (65, 298708), (106, 183170), (130, 149354), (212, 91585), (260, 74677), (265, 73268), (530, 36634), (689, 28180), (1060, 18317), (1378, 14090), (1409, 13780), (2756, 7045), (2818, 6890), (3445, 5636)]