19658470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:185

約数の個数: 64

約数和(自身を含む): 40372416

約数和(自身を除く): 20713946

約数列:

[1, 2, 5, 10, 13, 26, 37, 61, 65, 67, 74, 122, 130, 134, 185, 305, 335, 370, 481, 610, 670, 793, 871, 962, 1586, 1742, 2257, 2405, 2479, 3965, 4087, 4355, 4514, 4810, 4958, 7930, 8174, 8710, 11285, 12395, 20435, 22570, 24790, 29341, 32227, 40870, 53131, 58682, 64454, 106262, 146705, 151219, 161135, 265655, 293410, 302438, 322270, 531310, 756095, 1512190, 1965847, 3931694, 9829235, 19658470]

約数ペア:

[(1, 19658470), (2, 9829235), (5, 3931694), (10, 1965847), (13, 1512190), (26, 756095), (37, 531310), (61, 322270), (65, 302438), (67, 293410), (74, 265655), (122, 161135), (130, 151219), (134, 146705), (185, 106262), (305, 64454), (335, 58682), (370, 53131), (481, 40870), (610, 32227), (670, 29341), (793, 24790), (871, 22570), (962, 20435), (1586, 12395), (1742, 11285), (2257, 8710), (2405, 8174), (2479, 7930), (3965, 4958), (4087, 4810), (4355, 4514)]