21556935

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:166

約数の個数: 80

約数和(自身を含む): 42653952

約数和(自身を除く): 21097017

約数列:

[1, 3, 5, 9, 15, 17, 27, 31, 45, 51, 81, 85, 93, 101, 135, 153, 155, 255, 279, 303, 405, 459, 465, 505, 527, 765, 837, 909, 1377, 1395, 1515, 1581, 1717, 2295, 2511, 2635, 2727, 3131, 4185, 4545, 4743, 5151, 6885, 7905, 8181, 8585, 9393, 12555, 13635, 14229, 15453, 15655, 23715, 25755, 28179, 40905, 42687, 46359, 46965, 53227, 71145, 77265, 84537, 139077, 140895, 159681, 213435, 231795, 253611, 266135, 422685, 479043, 695385, 798405, 1268055, 1437129, 2395215, 4311387, 7185645, 21556935]

約数ペア:

[(1, 21556935), (3, 7185645), (5, 4311387), (9, 2395215), (15, 1437129), (17, 1268055), (27, 798405), (31, 695385), (45, 479043), (51, 422685), (81, 266135), (85, 253611), (93, 231795), (101, 213435), (135, 159681), (153, 140895), (155, 139077), (255, 84537), (279, 77265), (303, 71145), (405, 53227), (459, 46965), (465, 46359), (505, 42687), (527, 40905), (765, 28179), (837, 25755), (909, 23715), (1377, 15655), (1395, 15453), (1515, 14229), (1581, 13635), (1717, 12555), (2295, 9393), (2511, 8585), (2635, 8181), (2727, 7905), (3131, 6885), (4185, 5151), (4545, 4743)]