20131648

素因数分解:

$2^6\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:255

約数の個数: 56

約数和(自身を含む): 42103040

約数和(自身を除く): 21971392

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 73, 124, 139, 146, 248, 278, 292, 496, 556, 584, 992, 1112, 1168, 1984, 2224, 2263, 2336, 4309, 4448, 4526, 4672, 8618, 8896, 9052, 10147, 17236, 18104, 20294, 34472, 36208, 40588, 68944, 72416, 81176, 137888, 144832, 162352, 275776, 314557, 324704, 629114, 649408, 1258228, 2516456, 5032912, 10065824, 20131648]

約数ペア:

[(1, 20131648), (2, 10065824), (4, 5032912), (8, 2516456), (16, 1258228), (31, 649408), (32, 629114), (62, 324704), (64, 314557), (73, 275776), (124, 162352), (139, 144832), (146, 137888), (248, 81176), (278, 72416), (292, 68944), (496, 40588), (556, 36208), (584, 34472), (992, 20294), (1112, 18104), (1168, 17236), (1984, 10147), (2224, 9052), (2263, 8896), (2336, 8618), (4309, 4672), (4448, 4526)]