20117175

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:512

約数の個数: 48

約数和(自身を含む): 36664320

約数和(自身を除く): 16547145

約数列:

[1, 3, 5, 13, 15, 25, 39, 47, 65, 75, 141, 195, 235, 325, 439, 611, 705, 975, 1175, 1317, 1833, 2195, 3055, 3525, 5707, 6585, 9165, 10975, 15275, 17121, 20633, 28535, 32925, 45825, 61899, 85605, 103165, 142675, 268229, 309495, 428025, 515825, 804687, 1341145, 1547475, 4023435, 6705725, 20117175]

約数ペア:

[(1, 20117175), (3, 6705725), (5, 4023435), (13, 1547475), (15, 1341145), (25, 804687), (39, 515825), (47, 428025), (65, 309495), (75, 268229), (141, 142675), (195, 103165), (235, 85605), (325, 61899), (439, 45825), (611, 32925), (705, 28535), (975, 20633), (1175, 17121), (1317, 15275), (1833, 10975), (2195, 9165), (3055, 6585), (3525, 5707)]