21321160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76147}}^1$

素因数の和:76165

約数の個数: 32

約数和(自身を含む): 54826560

約数和(自身を除く): 33505400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76147, 152294, 304588, 380735, 533029, 609176, 761470, 1066058, 1522940, 2132116, 2665145, 3045880, 4264232, 5330290, 10660580, 21321160]

約数ペア:

[(1, 21321160), (2, 10660580), (4, 5330290), (5, 4264232), (7, 3045880), (8, 2665145), (10, 2132116), (14, 1522940), (20, 1066058), (28, 761470), (35, 609176), (40, 533029), (56, 380735), (70, 304588), (140, 152294), (280, 76147)]