19745968

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{743}}^1$

素因数の和:913

約数の個数: 40

約数和(自身を含む): 42068736

約数和(自身を除く): 22322768

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 151, 176, 302, 604, 743, 1208, 1486, 1661, 2416, 2972, 3322, 5944, 6644, 8173, 11888, 13288, 16346, 26576, 32692, 65384, 112193, 130768, 224386, 448772, 897544, 1234123, 1795088, 2468246, 4936492, 9872984, 19745968]

約数ペア:

[(1, 19745968), (2, 9872984), (4, 4936492), (8, 2468246), (11, 1795088), (16, 1234123), (22, 897544), (44, 448772), (88, 224386), (151, 130768), (176, 112193), (302, 65384), (604, 32692), (743, 26576), (1208, 16346), (1486, 13288), (1661, 11888), (2416, 8173), (2972, 6644), (3322, 5944)]