21538512

素因数分解:

$2^4\times 3^2\times {\mathrm{373}}^1\times {\mathrm{401}}^1$

素因数の和:788

約数の個数: 60

約数和(自身を含む): 60590244

約数和(自身を除く): 39051732

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 373, 401, 746, 802, 1119, 1203, 1492, 1604, 2238, 2406, 2984, 3208, 3357, 3609, 4476, 4812, 5968, 6416, 6714, 7218, 8952, 9624, 13428, 14436, 17904, 19248, 26856, 28872, 53712, 57744, 149573, 299146, 448719, 598292, 897438, 1196584, 1346157, 1794876, 2393168, 2692314, 3589752, 5384628, 7179504, 10769256, 21538512]

約数ペア:

[(1, 21538512), (2, 10769256), (3, 7179504), (4, 5384628), (6, 3589752), (8, 2692314), (9, 2393168), (12, 1794876), (16, 1346157), (18, 1196584), (24, 897438), (36, 598292), (48, 448719), (72, 299146), (144, 149573), (373, 57744), (401, 53712), (746, 28872), (802, 26856), (1119, 19248), (1203, 17904), (1492, 14436), (1604, 13428), (2238, 9624), (2406, 8952), (2984, 7218), (3208, 6714), (3357, 6416), (3609, 5968), (4476, 4812)]