90378981

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:663

約数の個数: 72

約数和(自身を含む): 171295488

約数和(自身を除く): 80916507

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 49, 63, 77, 93, 99, 147, 217, 231, 279, 341, 441, 539, 601, 651, 693, 1023, 1519, 1617, 1803, 1953, 2387, 3069, 4207, 4557, 4851, 5409, 6611, 7161, 12621, 13671, 16709, 18631, 19833, 21483, 29449, 37863, 46277, 50127, 55893, 59499, 88347, 130417, 138831, 150381, 167679, 204941, 265041, 323939, 391251, 416493, 614823, 912919, 971817, 1173753, 1434587, 1844469, 2738757, 2915451, 4303761, 8216271, 10042109, 12911283, 30126327, 90378981]

約数ペア:

[(1, 90378981), (3, 30126327), (7, 12911283), (9, 10042109), (11, 8216271), (21, 4303761), (31, 2915451), (33, 2738757), (49, 1844469), (63, 1434587), (77, 1173753), (93, 971817), (99, 912919), (147, 614823), (217, 416493), (231, 391251), (279, 323939), (341, 265041), (441, 204941), (539, 167679), (601, 150381), (651, 138831), (693, 130417), (1023, 88347), (1519, 59499), (1617, 55893), (1803, 50127), (1953, 46277), (2387, 37863), (3069, 29449), (4207, 21483), (4557, 19833), (4851, 18631), (5409, 16709), (6611, 13671), (7161, 12621)]