21754733

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 29632512

約数和(自身を除く): 7877779

約数列:

[1, 7, 11, 13, 77, 91, 103, 143, 211, 721, 1001, 1133, 1339, 1477, 2321, 2743, 7931, 9373, 14729, 16247, 19201, 21733, 30173, 103103, 152131, 211211, 239063, 282529, 1673441, 1977703, 3107819, 21754733]

約数ペア:

[(1, 21754733), (7, 3107819), (11, 1977703), (13, 1673441), (77, 282529), (91, 239063), (103, 211211), (143, 152131), (211, 103103), (721, 30173), (1001, 21733), (1133, 19201), (1339, 16247), (1477, 14729), (2321, 9373), (2743, 7931)]