2161341

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^2\times {\mathrm{29}}^1$

素因数の和:75

約数の個数: 54

約数和(自身を含む): 4068090

約数和(自身を除く): 1906749

約数列:

[1, 3, 7, 9, 13, 21, 29, 39, 49, 63, 87, 91, 117, 147, 169, 203, 261, 273, 377, 441, 507, 609, 637, 819, 1131, 1183, 1421, 1521, 1827, 1911, 2639, 3393, 3549, 4263, 4901, 5733, 7917, 8281, 10647, 12789, 14703, 18473, 23751, 24843, 34307, 44109, 55419, 74529, 102921, 166257, 240149, 308763, 720447, 2161341]

約数ペア:

[(1, 2161341), (3, 720447), (7, 308763), (9, 240149), (13, 166257), (21, 102921), (29, 74529), (39, 55419), (49, 44109), (63, 34307), (87, 24843), (91, 23751), (117, 18473), (147, 14703), (169, 12789), (203, 10647), (261, 8281), (273, 7917), (377, 5733), (441, 4901), (507, 4263), (609, 3549), (637, 3393), (819, 2639), (1131, 1911), (1183, 1827), (1421, 1521)]