20317821625

素因数分解:

$5^3\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{571}}^1$

素因数の和:811

約数の個数: 64

約数和(自身を含む): 26713919232

約数和(自身を除く): 6396097607

約数列:

[1, 5, 25, 41, 53, 125, 131, 205, 265, 571, 655, 1025, 1325, 2173, 2855, 3275, 5125, 5371, 6625, 6943, 10865, 14275, 16375, 23411, 26855, 30263, 34715, 54325, 71375, 74801, 117055, 134275, 151315, 173575, 271625, 284663, 374005, 585275, 671375, 756575, 867875, 1240783, 1423315, 1870025, 2926375, 3066841, 3782875, 3964453, 6203915, 7116575, 9350125, 15334205, 19822265, 31019575, 35582875, 76671025, 99111325, 155097875, 162542573, 383355125, 495556625, 812712865, 4063564325, 20317821625]

約数ペア:

[(1, 20317821625), (5, 4063564325), (25, 812712865), (41, 495556625), (53, 383355125), (125, 162542573), (131, 155097875), (205, 99111325), (265, 76671025), (571, 35582875), (655, 31019575), (1025, 19822265), (1325, 15334205), (2173, 9350125), (2855, 7116575), (3275, 6203915), (5125, 3964453), (5371, 3782875), (6625, 3066841), (6943, 2926375), (10865, 1870025), (14275, 1423315), (16375, 1240783), (23411, 867875), (26855, 756575), (30263, 671375), (34715, 585275), (54325, 374005), (71375, 284663), (74801, 271625), (117055, 173575), (134275, 151315)]