64447280

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{27779}}^1$

素因数の和:27821

約数の個数: 40

約数和(自身を含む): 155012400

約数和(自身を除く): 90565120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 27779, 55558, 111116, 138895, 222232, 277790, 444464, 555580, 805591, 1111160, 1611182, 2222320, 3222364, 4027955, 6444728, 8055910, 12889456, 16111820, 32223640, 64447280]

約数ペア:

[(1, 64447280), (2, 32223640), (4, 16111820), (5, 12889456), (8, 8055910), (10, 6444728), (16, 4027955), (20, 3222364), (29, 2222320), (40, 1611182), (58, 1111160), (80, 805591), (116, 555580), (145, 444464), (232, 277790), (290, 222232), (464, 138895), (580, 111116), (1160, 55558), (2320, 27779)]