21305935

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 32832000

約数和(自身を除く): 11526065

約数列:

[1, 5, 7, 19, 23, 35, 49, 95, 115, 133, 161, 199, 245, 437, 665, 805, 931, 995, 1127, 1393, 2185, 3059, 3781, 4577, 4655, 5635, 6965, 9751, 15295, 18905, 21413, 22885, 26467, 32039, 48755, 86963, 107065, 132335, 160195, 185269, 224273, 434815, 608741, 926345, 1121365, 3043705, 4261187, 21305935]

約数ペア:

[(1, 21305935), (5, 4261187), (7, 3043705), (19, 1121365), (23, 926345), (35, 608741), (49, 434815), (95, 224273), (115, 185269), (133, 160195), (161, 132335), (199, 107065), (245, 86963), (437, 48755), (665, 32039), (805, 26467), (931, 22885), (995, 21413), (1127, 18905), (1393, 15295), (2185, 9751), (3059, 6965), (3781, 5635), (4577, 4655)]