20189636875

素因数分解:

$5^4\times {\mathrm{29}}^1\times {\mathrm{1021}}^1\times {\mathrm{1091}}^1$

素因数の和:2161

約数の個数: 40

約数和(自身を含む): 26148442320

約数和(自身を除く): 5958805445

約数列:

[1, 5, 25, 29, 125, 145, 625, 725, 1021, 1091, 3625, 5105, 5455, 18125, 25525, 27275, 29609, 31639, 127625, 136375, 148045, 158195, 638125, 681875, 740225, 790975, 1113911, 3701125, 3954875, 5569555, 18505625, 19774375, 27847775, 32303419, 139238875, 161517095, 696194375, 807585475, 4037927375, 20189636875]

約数ペア:

[(1, 20189636875), (5, 4037927375), (25, 807585475), (29, 696194375), (125, 161517095), (145, 139238875), (625, 32303419), (725, 27847775), (1021, 19774375), (1091, 18505625), (3625, 5569555), (5105, 3954875), (5455, 3701125), (18125, 1113911), (25525, 790975), (27275, 740225), (29609, 681875), (31639, 638125), (127625, 158195), (136375, 148045)]