20863990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{12959}}^1$

素因数の和:12996

約数の個数: 32

約数和(自身を含む): 44789760

約数和(自身を除く): 23925770

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 115, 161, 230, 322, 805, 1610, 12959, 25918, 64795, 90713, 129590, 181426, 298057, 453565, 596114, 907130, 1490285, 2086399, 2980570, 4172798, 10431995, 20863990]

約数ペア:

[(1, 20863990), (2, 10431995), (5, 4172798), (7, 2980570), (10, 2086399), (14, 1490285), (23, 907130), (35, 596114), (46, 453565), (70, 298057), (115, 181426), (161, 129590), (230, 90713), (322, 64795), (805, 25918), (1610, 12959)]