388690020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{2179}}^1$

素因数の和:3185

約数の個数: 72

約数和(自身を含む): 1180757760

約数和(自身を除く): 792067740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 991, 1982, 2179, 2973, 3964, 4358, 4955, 5946, 6537, 8716, 8919, 9910, 10895, 11892, 13074, 14865, 17838, 19611, 19820, 21790, 26148, 29730, 32685, 35676, 39222, 43580, 44595, 59460, 65370, 78444, 89190, 98055, 130740, 178380, 196110, 392220, 2159389, 4318778, 6478167, 8637556, 10796945, 12956334, 19434501, 21593890, 25912668, 32390835, 38869002, 43187780, 64781670, 77738004, 97172505, 129563340, 194345010, 388690020]

約数ペア:

[(1, 388690020), (2, 194345010), (3, 129563340), (4, 97172505), (5, 77738004), (6, 64781670), (9, 43187780), (10, 38869002), (12, 32390835), (15, 25912668), (18, 21593890), (20, 19434501), (30, 12956334), (36, 10796945), (45, 8637556), (60, 6478167), (90, 4318778), (180, 2159389), (991, 392220), (1982, 196110), (2179, 178380), (2973, 130740), (3964, 98055), (4358, 89190), (4955, 78444), (5946, 65370), (6537, 59460), (8716, 44595), (8919, 43580), (9910, 39222), (10895, 35676), (11892, 32685), (13074, 29730), (14865, 26148), (17838, 21790), (19611, 19820)]