21870298821

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{52553}}^1$

素因数の和:52738

約数の個数: 48

約数和(自身を含む): 35946936000

約数和(自身を除く): 14076637179

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 149, 399, 447, 931, 1043, 2793, 2831, 3129, 7301, 8493, 19817, 21903, 52553, 59451, 138719, 157659, 367871, 416157, 998507, 1103613, 2575097, 2995521, 6989549, 7725291, 7830397, 20968647, 23491191, 48926843, 54812779, 146780529, 148777543, 164438337, 383689453, 446332629, 1041442801, 1151068359, 3124328403, 7290099607, 21870298821]

約数ペア:

[(1, 21870298821), (3, 7290099607), (7, 3124328403), (19, 1151068359), (21, 1041442801), (49, 446332629), (57, 383689453), (133, 164438337), (147, 148777543), (149, 146780529), (399, 54812779), (447, 48926843), (931, 23491191), (1043, 20968647), (2793, 7830397), (2831, 7725291), (3129, 6989549), (7301, 2995521), (8493, 2575097), (19817, 1103613), (21903, 998507), (52553, 416157), (59451, 367871), (138719, 157659)]