19758501

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 34398208

約数和(自身を除く): 14639707

約数列:

[1, 3, 7, 9, 21, 31, 63, 67, 93, 151, 201, 217, 279, 453, 469, 603, 651, 1057, 1359, 1407, 1953, 2077, 3171, 4221, 4681, 6231, 9513, 10117, 14043, 14539, 18693, 30351, 32767, 42129, 43617, 70819, 91053, 98301, 130851, 212457, 294903, 313627, 637371, 940881, 2195389, 2822643, 6586167, 19758501]

約数ペア:

[(1, 19758501), (3, 6586167), (7, 2822643), (9, 2195389), (21, 940881), (31, 637371), (63, 313627), (67, 294903), (93, 212457), (151, 130851), (201, 98301), (217, 91053), (279, 70819), (453, 43617), (469, 42129), (603, 32767), (651, 30351), (1057, 18693), (1359, 14539), (1407, 14043), (1953, 10117), (2077, 9513), (3171, 6231), (4221, 4681)]