20891904

素因数分解:

$2^8\times 3^1\times {\mathrm{11}}^1\times {\mathrm{2473}}^1$

素因数の和:2503

約数の個数: 72

約数和(自身を含む): 60682272

約数和(自身を除く): 39790368

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 32, 33, 44, 48, 64, 66, 88, 96, 128, 132, 176, 192, 256, 264, 352, 384, 528, 704, 768, 1056, 1408, 2112, 2473, 2816, 4224, 4946, 7419, 8448, 9892, 14838, 19784, 27203, 29676, 39568, 54406, 59352, 79136, 81609, 108812, 118704, 158272, 163218, 217624, 237408, 316544, 326436, 435248, 474816, 633088, 652872, 870496, 949632, 1305744, 1740992, 1899264, 2611488, 3481984, 5222976, 6963968, 10445952, 20891904]

約数ペア:

[(1, 20891904), (2, 10445952), (3, 6963968), (4, 5222976), (6, 3481984), (8, 2611488), (11, 1899264), (12, 1740992), (16, 1305744), (22, 949632), (24, 870496), (32, 652872), (33, 633088), (44, 474816), (48, 435248), (64, 326436), (66, 316544), (88, 237408), (96, 217624), (128, 163218), (132, 158272), (176, 118704), (192, 108812), (256, 81609), (264, 79136), (352, 59352), (384, 54406), (528, 39568), (704, 29676), (768, 27203), (1056, 19784), (1408, 14838), (2112, 9892), (2473, 8448), (2816, 7419), (4224, 4946)]