21698523

素因数分解:

$3^4\times 7^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:115

約数の個数: 80

約数和(自身を含む): 41817600

約数和(自身を除く): 20119077

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 71, 77, 81, 99, 147, 189, 213, 231, 297, 343, 441, 497, 539, 567, 639, 693, 781, 891, 1029, 1323, 1491, 1617, 1917, 2079, 2343, 3087, 3479, 3773, 3969, 4473, 4851, 5467, 5751, 6237, 7029, 9261, 10437, 11319, 13419, 14553, 16401, 21087, 24353, 27783, 31311, 33957, 38269, 40257, 43659, 49203, 63261, 73059, 93933, 101871, 114807, 147609, 219177, 267883, 281799, 305613, 344421, 442827, 657531, 803649, 1033263, 1972593, 2410947, 3099789, 7232841, 21698523]

約数ペア:

[(1, 21698523), (3, 7232841), (7, 3099789), (9, 2410947), (11, 1972593), (21, 1033263), (27, 803649), (33, 657531), (49, 442827), (63, 344421), (71, 305613), (77, 281799), (81, 267883), (99, 219177), (147, 147609), (189, 114807), (213, 101871), (231, 93933), (297, 73059), (343, 63261), (441, 49203), (497, 43659), (539, 40257), (567, 38269), (639, 33957), (693, 31311), (781, 27783), (891, 24353), (1029, 21087), (1323, 16401), (1491, 14553), (1617, 13419), (1917, 11319), (2079, 10437), (2343, 9261), (3087, 7029), (3479, 6237), (3773, 5751), (3969, 5467), (4473, 4851)]