20167784

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2131}}^1$

素因数の和:2170

約数の個数: 48

約数和(自身を含む): 46818720

約数和(自身を除く): 26650936

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 2131, 2366, 4262, 4732, 8524, 9464, 14917, 17048, 27703, 29834, 55406, 59668, 110812, 119336, 193921, 221624, 360139, 387842, 720278, 775684, 1440556, 1551368, 2520973, 2881112, 5041946, 10083892, 20167784]

約数ペア:

[(1, 20167784), (2, 10083892), (4, 5041946), (7, 2881112), (8, 2520973), (13, 1551368), (14, 1440556), (26, 775684), (28, 720278), (52, 387842), (56, 360139), (91, 221624), (104, 193921), (169, 119336), (182, 110812), (338, 59668), (364, 55406), (676, 29834), (728, 27703), (1183, 17048), (1352, 14917), (2131, 9464), (2366, 8524), (4262, 4732)]