81356121

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 154222848

約数和(自身を除く): 72866727

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 49, 63, 77, 93, 99, 147, 217, 231, 279, 341, 441, 539, 541, 651, 693, 1023, 1519, 1617, 1623, 1953, 2387, 3069, 3787, 4557, 4851, 4869, 5951, 7161, 11361, 13671, 16709, 16771, 17853, 21483, 26509, 34083, 41657, 50127, 50313, 53559, 79527, 117397, 124971, 150381, 150939, 184481, 238581, 291599, 352191, 374913, 553443, 821779, 874797, 1056573, 1291367, 1660329, 2465337, 2624391, 3874101, 7396011, 9039569, 11622303, 27118707, 81356121]

約数ペア:

[(1, 81356121), (3, 27118707), (7, 11622303), (9, 9039569), (11, 7396011), (21, 3874101), (31, 2624391), (33, 2465337), (49, 1660329), (63, 1291367), (77, 1056573), (93, 874797), (99, 821779), (147, 553443), (217, 374913), (231, 352191), (279, 291599), (341, 238581), (441, 184481), (539, 150939), (541, 150381), (651, 124971), (693, 117397), (1023, 79527), (1519, 53559), (1617, 50313), (1623, 50127), (1953, 41657), (2387, 34083), (3069, 26509), (3787, 21483), (4557, 17853), (4851, 16771), (4869, 16709), (5951, 13671), (7161, 11361)]