19777527

素因数分解:

$3^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 37844352

約数和(自身を除く): 18066825

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 81, 99, 147, 151, 189, 231, 243, 297, 441, 453, 539, 567, 693, 891, 1057, 1323, 1359, 1617, 1661, 1701, 2079, 2673, 3171, 3969, 4077, 4851, 4983, 6237, 7399, 9513, 11627, 11907, 12231, 14553, 14949, 18711, 22197, 28539, 34881, 36693, 43659, 44847, 66591, 81389, 85617, 104643, 130977, 134541, 199773, 244167, 256851, 313929, 403623, 599319, 732501, 941787, 1797957, 2197503, 2825361, 6592509, 19777527]

約数ペア:

[(1, 19777527), (3, 6592509), (7, 2825361), (9, 2197503), (11, 1797957), (21, 941787), (27, 732501), (33, 599319), (49, 403623), (63, 313929), (77, 256851), (81, 244167), (99, 199773), (147, 134541), (151, 130977), (189, 104643), (231, 85617), (243, 81389), (297, 66591), (441, 44847), (453, 43659), (539, 36693), (567, 34881), (693, 28539), (891, 22197), (1057, 18711), (1323, 14949), (1359, 14553), (1617, 12231), (1661, 11907), (1701, 11627), (2079, 9513), (2673, 7399), (3171, 6237), (3969, 4983), (4077, 4851)]