21878528

素因数分解:

$2^8\times 7^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:473

約数の個数: 72

約数和(自身を含む): 51754080

約数和(自身を除く): 29875552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 64, 112, 116, 128, 203, 224, 232, 256, 406, 421, 448, 464, 812, 842, 896, 928, 1624, 1684, 1792, 1856, 2947, 3248, 3368, 3712, 5894, 6496, 6736, 7424, 11788, 12209, 12992, 13472, 23576, 24418, 25984, 26944, 47152, 48836, 51968, 53888, 85463, 94304, 97672, 107776, 170926, 188608, 195344, 341852, 377216, 390688, 683704, 754432, 781376, 1367408, 1562752, 2734816, 3125504, 5469632, 10939264, 21878528]

約数ペア:

[(1, 21878528), (2, 10939264), (4, 5469632), (7, 3125504), (8, 2734816), (14, 1562752), (16, 1367408), (28, 781376), (29, 754432), (32, 683704), (56, 390688), (58, 377216), (64, 341852), (112, 195344), (116, 188608), (128, 170926), (203, 107776), (224, 97672), (232, 94304), (256, 85463), (406, 53888), (421, 51968), (448, 48836), (464, 47152), (812, 26944), (842, 25984), (896, 24418), (928, 23576), (1624, 13472), (1684, 12992), (1792, 12209), (1856, 11788), (2947, 7424), (3248, 6736), (3368, 6496), (3712, 5894)]