18947996

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:518

約数の個数: 36

約数和(自身を含む): 36257928

約数和(自身を除く): 17309932

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 148, 289, 443, 578, 629, 886, 1156, 1258, 1772, 2516, 7531, 10693, 15062, 16391, 21386, 30124, 32782, 42772, 65564, 128027, 256054, 278647, 512108, 557294, 1114588, 4736999, 9473998, 18947996]

約数ペア:

[(1, 18947996), (2, 9473998), (4, 4736999), (17, 1114588), (34, 557294), (37, 512108), (68, 278647), (74, 256054), (148, 128027), (289, 65564), (443, 42772), (578, 32782), (629, 30124), (886, 21386), (1156, 16391), (1258, 15062), (1772, 10693), (2516, 7531)]