27790497

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:143

約数の個数: 72

約数和(自身を含む): 50417640

約数和(自身を除く): 22627143

約数列:

[1, 3, 7, 9, 21, 29, 41, 49, 53, 63, 87, 123, 147, 159, 203, 261, 287, 369, 371, 441, 477, 609, 861, 1113, 1189, 1421, 1537, 1827, 2009, 2173, 2583, 2597, 3339, 3567, 4263, 4611, 6027, 6519, 7791, 8323, 10701, 10759, 12789, 13833, 15211, 18081, 19557, 23373, 24969, 32277, 45633, 58261, 63017, 74907, 75313, 96831, 106477, 136899, 174783, 189051, 225939, 319431, 441119, 524349, 567153, 677817, 958293, 1323357, 3087833, 3970071, 9263499, 27790497]

約数ペア:

[(1, 27790497), (3, 9263499), (7, 3970071), (9, 3087833), (21, 1323357), (29, 958293), (41, 677817), (49, 567153), (53, 524349), (63, 441119), (87, 319431), (123, 225939), (147, 189051), (159, 174783), (203, 136899), (261, 106477), (287, 96831), (369, 75313), (371, 74907), (441, 63017), (477, 58261), (609, 45633), (861, 32277), (1113, 24969), (1189, 23373), (1421, 19557), (1537, 18081), (1827, 15211), (2009, 13833), (2173, 12789), (2583, 10759), (2597, 10701), (3339, 8323), (3567, 7791), (4263, 6519), (4611, 6027)]