21173264

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2393}}^1$

素因数の和:2487

約数の個数: 40

約数和(自身を含む): 47496960

約数和(自身を除く): 26323696

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 158, 316, 553, 632, 1106, 1264, 2212, 2393, 4424, 4786, 8848, 9572, 16751, 19144, 33502, 38288, 67004, 134008, 189047, 268016, 378094, 756188, 1323329, 1512376, 2646658, 3024752, 5293316, 10586632, 21173264]

約数ペア:

[(1, 21173264), (2, 10586632), (4, 5293316), (7, 3024752), (8, 2646658), (14, 1512376), (16, 1323329), (28, 756188), (56, 378094), (79, 268016), (112, 189047), (158, 134008), (316, 67004), (553, 38288), (632, 33502), (1106, 19144), (1264, 16751), (2212, 9572), (2393, 8848), (4424, 4786)]