31423119

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 55050240

約数和(自身を除く): 23627121

約数列:

[1, 3, 7, 13, 21, 31, 39, 47, 79, 91, 93, 141, 217, 237, 273, 329, 403, 553, 611, 651, 987, 1027, 1209, 1457, 1659, 1833, 2449, 2821, 3081, 3713, 4277, 4371, 7189, 7347, 8463, 10199, 11139, 12831, 17143, 18941, 21567, 25991, 30597, 31837, 48269, 51429, 56823, 77973, 95511, 115103, 132587, 144807, 222859, 337883, 345309, 397761, 668577, 805721, 1013649, 1496339, 2417163, 4489017, 10474373, 31423119]

約数ペア:

[(1, 31423119), (3, 10474373), (7, 4489017), (13, 2417163), (21, 1496339), (31, 1013649), (39, 805721), (47, 668577), (79, 397761), (91, 345309), (93, 337883), (141, 222859), (217, 144807), (237, 132587), (273, 115103), (329, 95511), (403, 77973), (553, 56823), (611, 51429), (651, 48269), (987, 31837), (1027, 30597), (1209, 25991), (1457, 21567), (1659, 18941), (1833, 17143), (2449, 12831), (2821, 11139), (3081, 10199), (3713, 8463), (4277, 7347), (4371, 7189)]