19791825

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1$

素因数の和:111

約数の個数: 72

約数和(自身を含む): 37417248

約数和(自身を除く): 17625423

約数列:

[1, 3, 5, 15, 17, 19, 25, 43, 51, 57, 75, 85, 95, 129, 215, 255, 285, 323, 361, 425, 475, 645, 731, 817, 969, 1075, 1083, 1275, 1425, 1615, 1805, 2193, 2451, 3225, 3655, 4085, 4845, 5415, 6137, 8075, 9025, 10965, 12255, 13889, 15523, 18275, 18411, 20425, 24225, 27075, 30685, 41667, 46569, 54825, 61275, 69445, 77615, 92055, 153425, 208335, 232845, 263891, 347225, 388075, 460275, 791673, 1041675, 1164225, 1319455, 3958365, 6597275, 19791825]

約数ペア:

[(1, 19791825), (3, 6597275), (5, 3958365), (15, 1319455), (17, 1164225), (19, 1041675), (25, 791673), (43, 460275), (51, 388075), (57, 347225), (75, 263891), (85, 232845), (95, 208335), (129, 153425), (215, 92055), (255, 77615), (285, 69445), (323, 61275), (361, 54825), (425, 46569), (475, 41667), (645, 30685), (731, 27075), (817, 24225), (969, 20425), (1075, 18411), (1083, 18275), (1275, 15523), (1425, 13889), (1615, 12255), (1805, 10965), (2193, 9025), (2451, 8075), (3225, 6137), (3655, 5415), (4085, 4845)]