216778849

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 271385856

約数和(自身を除く): 54607007

約数列:

[1, 7, 17, 41, 119, 157, 283, 287, 697, 1099, 1981, 2669, 4811, 4879, 6437, 11603, 18683, 33677, 44431, 45059, 81221, 109429, 197251, 311017, 755327, 766003, 1380757, 1821671, 5287289, 12751697, 30968407, 216778849]

約数ペア:

[(1, 216778849), (7, 30968407), (17, 12751697), (41, 5287289), (119, 1821671), (157, 1380757), (283, 766003), (287, 755327), (697, 311017), (1099, 197251), (1981, 109429), (2669, 81221), (4811, 45059), (4879, 44431), (6437, 33677), (11603, 18683)]