19890344

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{577}}^1$

素因数の和:753

約数の個数: 32

約数和(自身を含む): 38841600

約数和(自身を除く): 18951256

約数列:

[1, 2, 4, 8, 31, 62, 124, 139, 248, 278, 556, 577, 1112, 1154, 2308, 4309, 4616, 8618, 17236, 17887, 34472, 35774, 71548, 80203, 143096, 160406, 320812, 641624, 2486293, 4972586, 9945172, 19890344]

約数ペア:

[(1, 19890344), (2, 9945172), (4, 4972586), (8, 2486293), (31, 641624), (62, 320812), (124, 160406), (139, 143096), (248, 80203), (278, 71548), (556, 35774), (577, 34472), (1112, 17887), (1154, 17236), (2308, 8618), (4309, 4616)]