28156780827

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{281}}^1\times {\mathrm{863}}^1$

素因数の和:1273

約数の個数: 96

約数和(自身を含む): 49665208320

約数和(自身を除く): 21508427493

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 97, 133, 171, 281, 291, 399, 679, 843, 863, 873, 1197, 1843, 1967, 2037, 2529, 2589, 5339, 5529, 5901, 6041, 6111, 7767, 12901, 16017, 16397, 16587, 17703, 18123, 27257, 37373, 38703, 48051, 49191, 54369, 81771, 83711, 112119, 114779, 116109, 147573, 190799, 242503, 245313, 251133, 336357, 344337, 517883, 572397, 585977, 727509, 753399, 1033011, 1553649, 1590509, 1697521, 1717191, 1757931, 2182527, 3625181, 4607557, 4660947, 4771527, 5092563, 5273793, 10875543, 11133563, 13822671, 14314581, 15277689, 23522791, 32252899, 32626629, 33400689, 41468013, 70568373, 96758697, 100202067, 164659537, 211705119, 290276091, 446933029, 493978611, 1340799087, 1481935833, 3128531203, 4022397261, 9385593609, 28156780827]

約数ペア:

[(1, 28156780827), (3, 9385593609), (7, 4022397261), (9, 3128531203), (19, 1481935833), (21, 1340799087), (57, 493978611), (63, 446933029), (97, 290276091), (133, 211705119), (171, 164659537), (281, 100202067), (291, 96758697), (399, 70568373), (679, 41468013), (843, 33400689), (863, 32626629), (873, 32252899), (1197, 23522791), (1843, 15277689), (1967, 14314581), (2037, 13822671), (2529, 11133563), (2589, 10875543), (5339, 5273793), (5529, 5092563), (5901, 4771527), (6041, 4660947), (6111, 4607557), (7767, 3625181), (12901, 2182527), (16017, 1757931), (16397, 1717191), (16587, 1697521), (17703, 1590509), (18123, 1553649), (27257, 1033011), (37373, 753399), (38703, 727509), (48051, 585977), (49191, 572397), (54369, 517883), (81771, 344337), (83711, 336357), (112119, 251133), (114779, 245313), (116109, 242503), (147573, 190799)]