21969454

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:324

約数の個数: 32

約数和(自身を含む): 36741600

約数和(自身を除く): 14772146

約数列:

[1, 2, 13, 26, 53, 106, 107, 149, 214, 298, 689, 1378, 1391, 1937, 2782, 3874, 5671, 7897, 11342, 15794, 15943, 31886, 73723, 102661, 147446, 205322, 207259, 414518, 844979, 1689958, 10984727, 21969454]

約数ペア:

[(1, 21969454), (2, 10984727), (13, 1689958), (26, 844979), (53, 414518), (106, 207259), (107, 205322), (149, 147446), (214, 102661), (298, 73723), (689, 31886), (1378, 15943), (1391, 15794), (1937, 11342), (2782, 7897), (3874, 5671)]