19904240

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4217}}^1$

素因数の和:4289

約数の個数: 40

約数和(自身を含む): 47072880

約数和(自身を除く): 27168640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4217, 4720, 8434, 16868, 21085, 33736, 42170, 67472, 84340, 168680, 248803, 337360, 497606, 995212, 1244015, 1990424, 2488030, 3980848, 4976060, 9952120, 19904240]

約数ペア:

[(1, 19904240), (2, 9952120), (4, 4976060), (5, 3980848), (8, 2488030), (10, 1990424), (16, 1244015), (20, 995212), (40, 497606), (59, 337360), (80, 248803), (118, 168680), (236, 84340), (295, 67472), (472, 42170), (590, 33736), (944, 21085), (1180, 16868), (2360, 8434), (4217, 4720)]