21670220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7577}}^1$

素因数の和:7610

約数の個数: 48

約数和(自身を含む): 53470368

約数和(自身を除く): 31800148

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7577, 15154, 30308, 37885, 75770, 83347, 98501, 151540, 166694, 197002, 333388, 394004, 416735, 492505, 833470, 985010, 1083511, 1666940, 1970020, 2167022, 4334044, 5417555, 10835110, 21670220]

約数ペア:

[(1, 21670220), (2, 10835110), (4, 5417555), (5, 4334044), (10, 2167022), (11, 1970020), (13, 1666940), (20, 1083511), (22, 985010), (26, 833470), (44, 492505), (52, 416735), (55, 394004), (65, 333388), (110, 197002), (130, 166694), (143, 151540), (220, 98501), (260, 83347), (286, 75770), (572, 37885), (715, 30308), (1430, 15154), (2860, 7577)]