1325242520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{205783}}^1$

素因数の和:205824

約数の個数: 64

約数和(自身を含む): 3555947520

約数和(自身を除く): 2230705000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 205783, 411566, 823132, 1028915, 1440481, 1646264, 2057830, 2880962, 4115660, 4733009, 5761924, 7202405, 8231320, 9466018, 11523848, 14404810, 18932036, 23665045, 28809620, 33131063, 37864072, 47330090, 57619240, 66262126, 94660180, 132524252, 165655315, 189320360, 265048504, 331310630, 662621260, 1325242520]

約数ペア:

[(1, 1325242520), (2, 662621260), (4, 331310630), (5, 265048504), (7, 189320360), (8, 165655315), (10, 132524252), (14, 94660180), (20, 66262126), (23, 57619240), (28, 47330090), (35, 37864072), (40, 33131063), (46, 28809620), (56, 23665045), (70, 18932036), (92, 14404810), (115, 11523848), (140, 9466018), (161, 8231320), (184, 7202405), (230, 5761924), (280, 4733009), (322, 4115660), (460, 2880962), (644, 2057830), (805, 1646264), (920, 1440481), (1288, 1028915), (1610, 823132), (3220, 411566), (6440, 205783)]