81987147

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{167}}^1$

素因数の和:238

約数の個数: 80

約数和(自身を含む): 146361600

約数和(自身を除く): 64374453

約数列:

[1, 3, 9, 11, 19, 27, 29, 33, 57, 81, 87, 99, 167, 171, 209, 261, 297, 319, 501, 513, 551, 627, 783, 891, 957, 1503, 1539, 1653, 1837, 1881, 2349, 2871, 3173, 4509, 4843, 4959, 5511, 5643, 6061, 8613, 9519, 13527, 14529, 14877, 16533, 16929, 18183, 25839, 28557, 34903, 43587, 44631, 49599, 53273, 54549, 85671, 92017, 104709, 130761, 148797, 159819, 163647, 257013, 276051, 314127, 392283, 479457, 490941, 828153, 942381, 1012187, 1438371, 2484459, 2827143, 3036561, 4315113, 7453377, 9109683, 27329049, 81987147]

約数ペア:

[(1, 81987147), (3, 27329049), (9, 9109683), (11, 7453377), (19, 4315113), (27, 3036561), (29, 2827143), (33, 2484459), (57, 1438371), (81, 1012187), (87, 942381), (99, 828153), (167, 490941), (171, 479457), (209, 392283), (261, 314127), (297, 276051), (319, 257013), (501, 163647), (513, 159819), (551, 148797), (627, 130761), (783, 104709), (891, 92017), (957, 85671), (1503, 54549), (1539, 53273), (1653, 49599), (1837, 44631), (1881, 43587), (2349, 34903), (2871, 28557), (3173, 25839), (4509, 18183), (4843, 16929), (4959, 16533), (5511, 14877), (5643, 14529), (6061, 13527), (8613, 9519)]