147777777

素因数分解:

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

素因数の和:239

約数の個数: 64

約数和(自身を含む): 259776000

約数和(自身を除く): 111998223

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 197, 243, 343, 441, 567, 591, 729, 1029, 1323, 1379, 1701, 1773, 2187, 3087, 3969, 4137, 5103, 5319, 9261, 9653, 11907, 12411, 15309, 15957, 27783, 28959, 35721, 37233, 47871, 67571, 83349, 86877, 107163, 111699, 143613, 202713, 250047, 260631, 335097, 430839, 608139, 750141, 781893, 1005291, 1824417, 2345679, 3015873, 5473251, 7037037, 16419753, 21111111, 49259259, 147777777]

約数ペア:

[(1, 147777777), (3, 49259259), (7, 21111111), (9, 16419753), (21, 7037037), (27, 5473251), (49, 3015873), (63, 2345679), (81, 1824417), (147, 1005291), (189, 781893), (197, 750141), (243, 608139), (343, 430839), (441, 335097), (567, 260631), (591, 250047), (729, 202713), (1029, 143613), (1323, 111699), (1379, 107163), (1701, 86877), (1773, 83349), (2187, 67571), (3087, 47871), (3969, 37233), (4137, 35721), (5103, 28959), (5319, 27783), (9261, 15957), (9653, 15309), (11907, 12411)]