19390850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:395

約数の個数: 48

約数和(自身を含む): 38301120

約数和(自身を除く): 18910270

約数列:

[1, 2, 5, 10, 25, 29, 43, 50, 58, 86, 145, 215, 290, 311, 430, 622, 725, 1075, 1247, 1450, 1555, 2150, 2494, 3110, 6235, 7775, 9019, 12470, 13373, 15550, 18038, 26746, 31175, 45095, 62350, 66865, 90190, 133730, 225475, 334325, 387817, 450950, 668650, 775634, 1939085, 3878170, 9695425, 19390850]

約数ペア:

[(1, 19390850), (2, 9695425), (5, 3878170), (10, 1939085), (25, 775634), (29, 668650), (43, 450950), (50, 387817), (58, 334325), (86, 225475), (145, 133730), (215, 90190), (290, 66865), (311, 62350), (430, 45095), (622, 31175), (725, 26746), (1075, 18038), (1247, 15550), (1450, 13373), (1555, 12470), (2150, 9019), (2494, 7775), (3110, 6235)]