21054208

素因数分解:

$2^8\times 7^1\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:433

約数の個数: 72

約数和(自身を含む): 49710080

約数和(自身を除く): 28655872

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 379, 434, 448, 496, 758, 868, 896, 992, 1516, 1736, 1792, 1984, 2653, 3032, 3472, 3968, 5306, 6064, 6944, 7936, 10612, 11749, 12128, 13888, 21224, 23498, 24256, 27776, 42448, 46996, 48512, 55552, 82243, 84896, 93992, 97024, 164486, 169792, 187984, 328972, 339584, 375968, 657944, 679168, 751936, 1315888, 1503872, 2631776, 3007744, 5263552, 10527104, 21054208]

約数ペア:

[(1, 21054208), (2, 10527104), (4, 5263552), (7, 3007744), (8, 2631776), (14, 1503872), (16, 1315888), (28, 751936), (31, 679168), (32, 657944), (56, 375968), (62, 339584), (64, 328972), (112, 187984), (124, 169792), (128, 164486), (217, 97024), (224, 93992), (248, 84896), (256, 82243), (379, 55552), (434, 48512), (448, 46996), (496, 42448), (758, 27776), (868, 24256), (896, 23498), (992, 21224), (1516, 13888), (1736, 12128), (1792, 11749), (1984, 10612), (2653, 7936), (3032, 6944), (3472, 6064), (3968, 5306)]