21016164

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{241}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 54560352

約数和(自身を除く): 33544188

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 169, 172, 241, 258, 338, 482, 507, 516, 559, 676, 723, 964, 1014, 1118, 1446, 1677, 2028, 2236, 2892, 3133, 3354, 6266, 6708, 7267, 9399, 10363, 12532, 14534, 18798, 20726, 21801, 29068, 31089, 37596, 40729, 41452, 43602, 62178, 81458, 87204, 122187, 124356, 134719, 162916, 244374, 269438, 404157, 488748, 538876, 808314, 1616628, 1751347, 3502694, 5254041, 7005388, 10508082, 21016164]

約数ペア:

[(1, 21016164), (2, 10508082), (3, 7005388), (4, 5254041), (6, 3502694), (12, 1751347), (13, 1616628), (26, 808314), (39, 538876), (43, 488748), (52, 404157), (78, 269438), (86, 244374), (129, 162916), (156, 134719), (169, 124356), (172, 122187), (241, 87204), (258, 81458), (338, 62178), (482, 43602), (507, 41452), (516, 40729), (559, 37596), (676, 31089), (723, 29068), (964, 21801), (1014, 20726), (1118, 18798), (1446, 14534), (1677, 12532), (2028, 10363), (2236, 9399), (2892, 7267), (3133, 6708), (3354, 6266)]