210428920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{404671}}^1$

素因数の和:404695

約数の個数: 32

約数和(自身を含む): 509886720

約数和(自身を除く): 299457800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 404671, 809342, 1618684, 2023355, 3237368, 4046710, 5260723, 8093420, 10521446, 16186840, 21042892, 26303615, 42085784, 52607230, 105214460, 210428920]

約数ペア:

[(1, 210428920), (2, 105214460), (4, 52607230), (5, 42085784), (8, 26303615), (10, 21042892), (13, 16186840), (20, 10521446), (26, 8093420), (40, 5260723), (52, 4046710), (65, 3237368), (104, 2023355), (130, 1618684), (260, 809342), (520, 404671)]