19628217

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 36288000

約数和(自身を除く): 16659783

約数列:

[1, 3, 7, 9, 17, 21, 27, 41, 51, 63, 119, 123, 149, 153, 189, 287, 357, 369, 447, 459, 697, 861, 1043, 1071, 1107, 1341, 2091, 2533, 2583, 3129, 3213, 4023, 4879, 6109, 6273, 7599, 7749, 9387, 14637, 17731, 18327, 18819, 22797, 28161, 42763, 43911, 53193, 54981, 68391, 103853, 128289, 131733, 159579, 164943, 311559, 384867, 478737, 726971, 934677, 1154601, 2180913, 2804031, 6542739, 19628217]

約数ペア:

[(1, 19628217), (3, 6542739), (7, 2804031), (9, 2180913), (17, 1154601), (21, 934677), (27, 726971), (41, 478737), (51, 384867), (63, 311559), (119, 164943), (123, 159579), (149, 131733), (153, 128289), (189, 103853), (287, 68391), (357, 54981), (369, 53193), (447, 43911), (459, 42763), (697, 28161), (861, 22797), (1043, 18819), (1071, 18327), (1107, 17731), (1341, 14637), (2091, 9387), (2533, 7749), (2583, 7599), (3129, 6273), (3213, 6109), (4023, 4879)]