721809728

素因数分解:

$2^6\times {\mathrm{79}}^1\times {\mathrm{367}}^1\times {\mathrm{389}}^1$

素因数の和:847

約数の個数: 56

約数和(自身を含む): 1458163200

約数和(自身を除く): 736353472

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 158, 316, 367, 389, 632, 734, 778, 1264, 1468, 1556, 2528, 2936, 3112, 5056, 5872, 6224, 11744, 12448, 23488, 24896, 28993, 30731, 57986, 61462, 115972, 122924, 142763, 231944, 245848, 285526, 463888, 491696, 571052, 927776, 983392, 1142104, 1855552, 1966784, 2284208, 4568416, 9136832, 11278277, 22556554, 45113108, 90226216, 180452432, 360904864, 721809728]

約数ペア:

[(1, 721809728), (2, 360904864), (4, 180452432), (8, 90226216), (16, 45113108), (32, 22556554), (64, 11278277), (79, 9136832), (158, 4568416), (316, 2284208), (367, 1966784), (389, 1855552), (632, 1142104), (734, 983392), (778, 927776), (1264, 571052), (1468, 491696), (1556, 463888), (2528, 285526), (2936, 245848), (3112, 231944), (5056, 142763), (5872, 122924), (6224, 115972), (11744, 61462), (12448, 57986), (23488, 30731), (24896, 28993)]