18156975545

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^2\times {\mathrm{67}}^1\times {\mathrm{223}}^1$

素因数の和:387

約数の個数: 72

約数和(自身を含む): 24437946624

約数和(自身を除く): 6280971079

約数列:

[1, 5, 17, 29, 67, 85, 145, 223, 289, 335, 493, 841, 1115, 1139, 1445, 1943, 2465, 3791, 4205, 5695, 6467, 8381, 9715, 14297, 14941, 18955, 19363, 32335, 33031, 41905, 56347, 64447, 71485, 74705, 96815, 109939, 165155, 187543, 243049, 253997, 281735, 322235, 433289, 549695, 561527, 937715, 957899, 1215245, 1269985, 1868963, 2166445, 2807635, 3188231, 4317949, 4789495, 7365913, 9344815, 12565381, 15941155, 16284283, 21589745, 36829565, 54199927, 62826905, 81421415, 125220521, 213611477, 270999635, 626102605, 1068057385, 3631395109, 18156975545]

約数ペア:

[(1, 18156975545), (5, 3631395109), (17, 1068057385), (29, 626102605), (67, 270999635), (85, 213611477), (145, 125220521), (223, 81421415), (289, 62826905), (335, 54199927), (493, 36829565), (841, 21589745), (1115, 16284283), (1139, 15941155), (1445, 12565381), (1943, 9344815), (2465, 7365913), (3791, 4789495), (4205, 4317949), (5695, 3188231), (6467, 2807635), (8381, 2166445), (9715, 1868963), (14297, 1269985), (14941, 1215245), (18955, 957899), (19363, 937715), (32335, 561527), (33031, 549695), (41905, 433289), (56347, 322235), (64447, 281735), (71485, 253997), (74705, 243049), (96815, 187543), (109939, 165155)]