81236020

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{313}}^1\times {\mathrm{683}}^1$

素因数の和:1024

約数の個数: 48

約数和(自身を含む): 180411840

約数和(自身を除く): 99175820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 313, 380, 626, 683, 1252, 1366, 1565, 2732, 3130, 3415, 5947, 6260, 6830, 11894, 12977, 13660, 23788, 25954, 29735, 51908, 59470, 64885, 118940, 129770, 213779, 259540, 427558, 855116, 1068895, 2137790, 4061801, 4275580, 8123602, 16247204, 20309005, 40618010, 81236020]

約数ペア:

[(1, 81236020), (2, 40618010), (4, 20309005), (5, 16247204), (10, 8123602), (19, 4275580), (20, 4061801), (38, 2137790), (76, 1068895), (95, 855116), (190, 427558), (313, 259540), (380, 213779), (626, 129770), (683, 118940), (1252, 64885), (1366, 59470), (1565, 51908), (2732, 29735), (3130, 25954), (3415, 23788), (5947, 13660), (6260, 12977), (6830, 11894)]