221363968

素因数分解:

$2^8\times 7^3\times {\mathrm{2521}}^1$

素因数の和:2558

約数の個数: 72

約数和(自身を含む): 515496800

約数和(自身を除く): 294132832

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 343, 392, 448, 686, 784, 896, 1372, 1568, 1792, 2521, 2744, 3136, 5042, 5488, 6272, 10084, 10976, 12544, 17647, 20168, 21952, 35294, 40336, 43904, 70588, 80672, 87808, 123529, 141176, 161344, 247058, 282352, 322688, 494116, 564704, 645376, 864703, 988232, 1129408, 1729406, 1976464, 2258816, 3458812, 3952928, 4517632, 6917624, 7905856, 13835248, 15811712, 27670496, 31623424, 55340992, 110681984, 221363968]

約数ペア:

[(1, 221363968), (2, 110681984), (4, 55340992), (7, 31623424), (8, 27670496), (14, 15811712), (16, 13835248), (28, 7905856), (32, 6917624), (49, 4517632), (56, 3952928), (64, 3458812), (98, 2258816), (112, 1976464), (128, 1729406), (196, 1129408), (224, 988232), (256, 864703), (343, 645376), (392, 564704), (448, 494116), (686, 322688), (784, 282352), (896, 247058), (1372, 161344), (1568, 141176), (1792, 123529), (2521, 87808), (2744, 80672), (3136, 70588), (5042, 43904), (5488, 40336), (6272, 35294), (10084, 21952), (10976, 20168), (12544, 17647)]