21149406

素因数分解:

$2^1\times 3^2\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:333

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 26024994

約数列:

[1, 2, 3, 6, 9, 18, 79, 107, 139, 158, 214, 237, 278, 321, 417, 474, 642, 711, 834, 963, 1251, 1422, 1926, 2502, 8453, 10981, 14873, 16906, 21962, 25359, 29746, 32943, 44619, 50718, 65886, 76077, 89238, 98829, 133857, 152154, 197658, 267714, 1174967, 2349934, 3524901, 7049802, 10574703, 21149406]

約数ペア:

[(1, 21149406), (2, 10574703), (3, 7049802), (6, 3524901), (9, 2349934), (18, 1174967), (79, 267714), (107, 197658), (139, 152154), (158, 133857), (214, 98829), (237, 89238), (278, 76077), (321, 65886), (417, 50718), (474, 44619), (642, 32943), (711, 29746), (834, 25359), (963, 21962), (1251, 16906), (1422, 14873), (1926, 10981), (2502, 8453)]