21332864

素因数分解:

$2^7\times 7^1\times {\mathrm{29}}^1\times {\mathrm{821}}^1$

素因数の和:871

約数の個数: 64

約数和(自身を含む): 50306400

約数和(自身を除く): 28973536

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 406, 448, 464, 812, 821, 896, 928, 1624, 1642, 1856, 3248, 3284, 3712, 5747, 6496, 6568, 11494, 12992, 13136, 22988, 23809, 25984, 26272, 45976, 47618, 52544, 91952, 95236, 105088, 166663, 183904, 190472, 333326, 367808, 380944, 666652, 735616, 761888, 1333304, 1523776, 2666608, 3047552, 5333216, 10666432, 21332864]

約数ペア:

[(1, 21332864), (2, 10666432), (4, 5333216), (7, 3047552), (8, 2666608), (14, 1523776), (16, 1333304), (28, 761888), (29, 735616), (32, 666652), (56, 380944), (58, 367808), (64, 333326), (112, 190472), (116, 183904), (128, 166663), (203, 105088), (224, 95236), (232, 91952), (406, 52544), (448, 47618), (464, 45976), (812, 26272), (821, 25984), (896, 23809), (928, 22988), (1624, 13136), (1642, 12992), (1856, 11494), (3248, 6568), (3284, 6496), (3712, 5747)]