81409120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39139}}^1$

素因数の和:39167

約数の個数: 48

約数和(自身を含む): 207128880

約数和(自身を除く): 125719760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 39139, 78278, 156556, 195695, 313112, 391390, 508807, 626224, 782780, 1017614, 1252448, 1565560, 2035228, 2544035, 3131120, 4070456, 5088070, 6262240, 8140912, 10176140, 16281824, 20352280, 40704560, 81409120]

約数ペア:

[(1, 81409120), (2, 40704560), (4, 20352280), (5, 16281824), (8, 10176140), (10, 8140912), (13, 6262240), (16, 5088070), (20, 4070456), (26, 3131120), (32, 2544035), (40, 2035228), (52, 1565560), (65, 1252448), (80, 1017614), (104, 782780), (130, 626224), (160, 508807), (208, 391390), (260, 313112), (416, 195695), (520, 156556), (1040, 78278), (2080, 39139)]