20565245840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{712093}}^1$

素因数の和:712144

約数の個数: 60

約数和(自身を含む): 50463253404

約数和(自身を除く): 29898007564

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 722, 760, 1444, 1520, 1805, 2888, 3610, 5776, 7220, 14440, 28880, 712093, 1424186, 2848372, 3560465, 5696744, 7120930, 11393488, 13529767, 14241860, 27059534, 28483720, 54119068, 56967440, 67648835, 108238136, 135297670, 216476272, 257065573, 270595340, 514131146, 541190680, 1028262292, 1082381360, 1285327865, 2056524584, 2570655730, 4113049168, 5141311460, 10282622920, 20565245840]

約数ペア:

[(1, 20565245840), (2, 10282622920), (4, 5141311460), (5, 4113049168), (8, 2570655730), (10, 2056524584), (16, 1285327865), (19, 1082381360), (20, 1028262292), (38, 541190680), (40, 514131146), (76, 270595340), (80, 257065573), (95, 216476272), (152, 135297670), (190, 108238136), (304, 67648835), (361, 56967440), (380, 54119068), (722, 28483720), (760, 27059534), (1444, 14241860), (1520, 13529767), (1805, 11393488), (2888, 7120930), (3610, 5696744), (5776, 3560465), (7220, 2848372), (14440, 1424186), (28880, 712093)]