18908890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1889}}^1$

素因数の和:1927

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 26813990

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 35, 55, 65, 70, 77, 91, 110, 130, 143, 154, 182, 286, 385, 455, 715, 770, 910, 1001, 1430, 1889, 2002, 3778, 5005, 9445, 10010, 13223, 18890, 20779, 24557, 26446, 41558, 49114, 66115, 103895, 122785, 132230, 145453, 171899, 207790, 245570, 270127, 290906, 343798, 540254, 727265, 859495, 1350635, 1454530, 1718990, 1890889, 2701270, 3781778, 9454445, 18908890]

約数ペア:

[(1, 18908890), (2, 9454445), (5, 3781778), (7, 2701270), (10, 1890889), (11, 1718990), (13, 1454530), (14, 1350635), (22, 859495), (26, 727265), (35, 540254), (55, 343798), (65, 290906), (70, 270127), (77, 245570), (91, 207790), (110, 171899), (130, 145453), (143, 132230), (154, 122785), (182, 103895), (286, 66115), (385, 49114), (455, 41558), (715, 26446), (770, 24557), (910, 20779), (1001, 18890), (1430, 13223), (1889, 10010), (2002, 9445), (3778, 5005)]