28508920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64793}}^1$

素因数の和:64815

約数の個数: 32

約数和(自身を含む): 69977520

約数和(自身を除く): 41468600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64793, 129586, 259172, 323965, 518344, 647930, 712723, 1295860, 1425446, 2591720, 2850892, 3563615, 5701784, 7127230, 14254460, 28508920]

約数ペア:

[(1, 28508920), (2, 14254460), (4, 7127230), (5, 5701784), (8, 3563615), (10, 2850892), (11, 2591720), (20, 1425446), (22, 1295860), (40, 712723), (44, 647930), (55, 518344), (88, 323965), (110, 259172), (220, 129586), (440, 64793)]