21257088

素因数分解:

$2^7\times 3^1\times {\mathrm{197}}^1\times {\mathrm{281}}^1$

素因数の和:495

約数の個数: 64

約数和(自身を含む): 56952720

約数和(自身を除く): 35695632

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 197, 281, 384, 394, 562, 591, 788, 843, 1124, 1182, 1576, 1686, 2248, 2364, 3152, 3372, 4496, 4728, 6304, 6744, 8992, 9456, 12608, 13488, 17984, 18912, 25216, 26976, 35968, 37824, 53952, 55357, 75648, 107904, 110714, 166071, 221428, 332142, 442856, 664284, 885712, 1328568, 1771424, 2657136, 3542848, 5314272, 7085696, 10628544, 21257088]

約数ペア:

[(1, 21257088), (2, 10628544), (3, 7085696), (4, 5314272), (6, 3542848), (8, 2657136), (12, 1771424), (16, 1328568), (24, 885712), (32, 664284), (48, 442856), (64, 332142), (96, 221428), (128, 166071), (192, 110714), (197, 107904), (281, 75648), (384, 55357), (394, 53952), (562, 37824), (591, 35968), (788, 26976), (843, 25216), (1124, 18912), (1182, 17984), (1576, 13488), (1686, 12608), (2248, 9456), (2364, 8992), (3152, 6744), (3372, 6304), (4496, 4728)]