20218123585

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1\times {\mathrm{409}}^1$

素因数の和:902

約数の個数: 64

約数和(自身を含む): 27810201600

約数和(自身を除く): 7592078015

約数列:

[1, 5, 11, 31, 55, 79, 155, 341, 367, 395, 409, 869, 1705, 1835, 2045, 2449, 4037, 4345, 4499, 11377, 12245, 12679, 20185, 22495, 26939, 28993, 32311, 56885, 63395, 125147, 134695, 139469, 144965, 150103, 161555, 318923, 355421, 625735, 697345, 750515, 898783, 1001641, 1594615, 1651133, 1777105, 4493915, 4653193, 5008205, 8255665, 9886613, 11018051, 11858137, 23265965, 49433065, 51185123, 55090255, 59290685, 130439507, 255925615, 367602247, 652197535, 1838011235, 4043624717, 20218123585]

約数ペア:

[(1, 20218123585), (5, 4043624717), (11, 1838011235), (31, 652197535), (55, 367602247), (79, 255925615), (155, 130439507), (341, 59290685), (367, 55090255), (395, 51185123), (409, 49433065), (869, 23265965), (1705, 11858137), (1835, 11018051), (2045, 9886613), (2449, 8255665), (4037, 5008205), (4345, 4653193), (4499, 4493915), (11377, 1777105), (12245, 1651133), (12679, 1594615), (20185, 1001641), (22495, 898783), (26939, 750515), (28993, 697345), (32311, 625735), (56885, 355421), (63395, 318923), (125147, 161555), (134695, 150103), (139469, 144965)]