81856647

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 128993280

約数和(自身を除く): 47136633

約数列:

[1, 3, 9, 29, 31, 67, 87, 93, 151, 201, 261, 279, 453, 603, 899, 1359, 1943, 2077, 2697, 4379, 4681, 5829, 6231, 8091, 10117, 13137, 14043, 17487, 18693, 30351, 39411, 42129, 60233, 91053, 135749, 180699, 293393, 313627, 407247, 542097, 880179, 940881, 1221741, 2640537, 2822643, 9095183, 27285549, 81856647]

約数ペア:

[(1, 81856647), (3, 27285549), (9, 9095183), (29, 2822643), (31, 2640537), (67, 1221741), (87, 940881), (93, 880179), (151, 542097), (201, 407247), (261, 313627), (279, 293393), (453, 180699), (603, 135749), (899, 91053), (1359, 60233), (1943, 42129), (2077, 39411), (2697, 30351), (4379, 18693), (4681, 17487), (5829, 14043), (6231, 13137), (8091, 10117)]