19438705

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{877}}^1$

素因数の和:937

約数の個数: 32

約数和(自身を含む): 28320768

約数和(自身を除く): 8882063

約数列:

[1, 5, 11, 13, 31, 55, 65, 143, 155, 341, 403, 715, 877, 1705, 2015, 4385, 4433, 9647, 11401, 22165, 27187, 48235, 57005, 125411, 135935, 299057, 353431, 627055, 1495285, 1767155, 3887741, 19438705]

約数ペア:

[(1, 19438705), (5, 3887741), (11, 1767155), (13, 1495285), (31, 627055), (55, 353431), (65, 299057), (143, 135935), (155, 125411), (341, 57005), (403, 48235), (715, 27187), (877, 22165), (1705, 11401), (2015, 9647), (4385, 4433)]