27630940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:179

約数の個数: 72

約数和(自身を含む): 63367920

約数和(自身を除く): 35736980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 89, 95, 172, 178, 190, 215, 356, 361, 380, 430, 445, 722, 817, 860, 890, 1444, 1634, 1691, 1780, 1805, 3268, 3382, 3610, 3827, 4085, 6764, 7220, 7654, 8170, 8455, 15308, 15523, 16340, 16910, 19135, 31046, 32129, 33820, 38270, 62092, 64258, 72713, 76540, 77615, 128516, 145426, 155230, 160645, 290852, 310460, 321290, 363565, 642580, 727130, 1381547, 1454260, 2763094, 5526188, 6907735, 13815470, 27630940]

約数ペア:

[(1, 27630940), (2, 13815470), (4, 6907735), (5, 5526188), (10, 2763094), (19, 1454260), (20, 1381547), (38, 727130), (43, 642580), (76, 363565), (86, 321290), (89, 310460), (95, 290852), (172, 160645), (178, 155230), (190, 145426), (215, 128516), (356, 77615), (361, 76540), (380, 72713), (430, 64258), (445, 62092), (722, 38270), (817, 33820), (860, 32129), (890, 31046), (1444, 19135), (1634, 16910), (1691, 16340), (1780, 15523), (1805, 15308), (3268, 8455), (3382, 8170), (3610, 7654), (3827, 7220), (4085, 6764)]