218810020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{76507}}^1$

素因数の和:76540

約数の個数: 48

約数和(自身を含む): 539840448

約数和(自身を除く): 321030428

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, 76507, 153014, 306028, 382535, 765070, 841577, 994591, 1530140, 1683154, 1989182, 3366308, 3978364, 4207885, 4972955, 8415770, 9945910, 10940501, 16831540, 19891820, 21881002, 43762004, 54702505, 109405010, 218810020]

約数ペア:

[(1, 218810020), (2, 109405010), (4, 54702505), (5, 43762004), (10, 21881002), (11, 19891820), (13, 16831540), (20, 10940501), (22, 9945910), (26, 8415770), (44, 4972955), (52, 4207885), (55, 3978364), (65, 3366308), (110, 1989182), (130, 1683154), (143, 1530140), (220, 994591), (260, 841577), (286, 765070), (572, 382535), (715, 306028), (1430, 153014), (2860, 76507)]