20210175

素因数分解:

$3^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{379}}^1$

素因数の和:477

約数の個数: 48

約数和(自身を含む): 37696000

約数和(自身を除く): 17485825

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 79, 135, 225, 237, 379, 395, 675, 711, 1137, 1185, 1895, 1975, 2133, 3411, 3555, 5685, 5925, 9475, 10233, 10665, 17055, 17775, 28425, 29941, 51165, 53325, 85275, 89823, 149705, 255825, 269469, 449115, 748525, 808407, 1347345, 2245575, 4042035, 6736725, 20210175]

約数ペア:

[(1, 20210175), (3, 6736725), (5, 4042035), (9, 2245575), (15, 1347345), (25, 808407), (27, 748525), (45, 449115), (75, 269469), (79, 255825), (135, 149705), (225, 89823), (237, 85275), (379, 53325), (395, 51165), (675, 29941), (711, 28425), (1137, 17775), (1185, 17055), (1895, 10665), (1975, 10233), (2133, 9475), (3411, 5925), (3555, 5685)]