19971567

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 38413440

約数和(自身を除く): 18441873

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 49, 63, 69, 77, 99, 147, 161, 179, 207, 231, 253, 441, 483, 537, 539, 693, 759, 1127, 1253, 1449, 1611, 1617, 1771, 1969, 2277, 3381, 3759, 4117, 4851, 5313, 5907, 8771, 10143, 11277, 12351, 12397, 13783, 15939, 17721, 26313, 28819, 37053, 37191, 41349, 45287, 78939, 86457, 96481, 111573, 124047, 135861, 201733, 259371, 289443, 317009, 407583, 605199, 868329, 951027, 1815597, 2219063, 2853081, 6657189, 19971567]

約数ペア:

[(1, 19971567), (3, 6657189), (7, 2853081), (9, 2219063), (11, 1815597), (21, 951027), (23, 868329), (33, 605199), (49, 407583), (63, 317009), (69, 289443), (77, 259371), (99, 201733), (147, 135861), (161, 124047), (179, 111573), (207, 96481), (231, 86457), (253, 78939), (441, 45287), (483, 41349), (537, 37191), (539, 37053), (693, 28819), (759, 26313), (1127, 17721), (1253, 15939), (1449, 13783), (1611, 12397), (1617, 12351), (1771, 11277), (1969, 10143), (2277, 8771), (3381, 5907), (3759, 5313), (4117, 4851)]