21489291255

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1\times {\mathrm{1103}}^1$

素因数の和:1632

約数の個数: 64

約数和(自身を含む): 35788677120

約数和(自身を除く): 14299385865

約数列:

[1, 3, 5, 15, 41, 79, 123, 205, 237, 395, 401, 615, 1103, 1185, 1203, 2005, 3239, 3309, 5515, 6015, 9717, 16195, 16441, 16545, 31679, 45223, 48585, 49323, 82205, 87137, 95037, 135669, 158395, 226115, 246615, 261411, 435685, 442303, 475185, 678345, 1298839, 1307055, 1326909, 2211515, 3572617, 3896517, 6494195, 6634545, 10717851, 17863085, 18134423, 19482585, 34941937, 53589255, 54403269, 90672115, 104825811, 174709685, 272016345, 524129055, 1432619417, 4297858251, 7163097085, 21489291255]

約数ペア:

[(1, 21489291255), (3, 7163097085), (5, 4297858251), (15, 1432619417), (41, 524129055), (79, 272016345), (123, 174709685), (205, 104825811), (237, 90672115), (395, 54403269), (401, 53589255), (615, 34941937), (1103, 19482585), (1185, 18134423), (1203, 17863085), (2005, 10717851), (3239, 6634545), (3309, 6494195), (5515, 3896517), (6015, 3572617), (9717, 2211515), (16195, 1326909), (16441, 1307055), (16545, 1298839), (31679, 678345), (45223, 475185), (48585, 442303), (49323, 435685), (82205, 261411), (87137, 246615), (95037, 226115), (135669, 158395)]