19037980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1979}}^1$

素因数の和:2038

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 25203140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 1979, 2405, 3958, 4810, 7916, 9620, 9895, 19790, 25727, 39580, 51454, 73223, 102908, 128635, 146446, 257270, 292892, 366115, 514540, 732230, 951899, 1464460, 1903798, 3807596, 4759495, 9518990, 19037980]

約数ペア:

[(1, 19037980), (2, 9518990), (4, 4759495), (5, 3807596), (10, 1903798), (13, 1464460), (20, 951899), (26, 732230), (37, 514540), (52, 366115), (65, 292892), (74, 257270), (130, 146446), (148, 128635), (185, 102908), (260, 73223), (370, 51454), (481, 39580), (740, 25727), (962, 19790), (1924, 9895), (1979, 9620), (2405, 7916), (3958, 4810)]