221566185

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{631}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 423748416

約数和(自身を除く): 202182231

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 289, 405, 459, 631, 765, 867, 1215, 1377, 1445, 1893, 2295, 2601, 3155, 4131, 4335, 5679, 6885, 7803, 9465, 10727, 13005, 17037, 20655, 23409, 28395, 32181, 39015, 51111, 53635, 70227, 85185, 96543, 117045, 153333, 160905, 182359, 255555, 289629, 351135, 482715, 547077, 766665, 868887, 911795, 1448145, 1641231, 2606661, 2735385, 4344435, 4923693, 8206155, 13033305, 14771079, 24618465, 44313237, 73855395, 221566185]

約数ペア:

[(1, 221566185), (3, 73855395), (5, 44313237), (9, 24618465), (15, 14771079), (17, 13033305), (27, 8206155), (45, 4923693), (51, 4344435), (81, 2735385), (85, 2606661), (135, 1641231), (153, 1448145), (243, 911795), (255, 868887), (289, 766665), (405, 547077), (459, 482715), (631, 351135), (765, 289629), (867, 255555), (1215, 182359), (1377, 160905), (1445, 153333), (1893, 117045), (2295, 96543), (2601, 85185), (3155, 70227), (4131, 53635), (4335, 51111), (5679, 39015), (6885, 32181), (7803, 28395), (9465, 23409), (10727, 20655), (13005, 17037)]