19404225

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:144

約数の個数: 96

約数和(自身を含む): 40176000

約数和(自身を除く): 20771775

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 27, 45, 51, 57, 75, 85, 89, 95, 135, 153, 171, 225, 255, 267, 285, 323, 425, 445, 459, 475, 513, 675, 765, 801, 855, 969, 1275, 1335, 1425, 1513, 1615, 1691, 2225, 2295, 2403, 2565, 2907, 3825, 4005, 4275, 4539, 4845, 5073, 6675, 7565, 8075, 8455, 8721, 11475, 12015, 12825, 13617, 14535, 15219, 20025, 22695, 24225, 25365, 28747, 37825, 40851, 42275, 43605, 45657, 60075, 68085, 72675, 76095, 86241, 113475, 126825, 143735, 204255, 218025, 228285, 258723, 340425, 380475, 431205, 718675, 776169, 1021275, 1141425, 1293615, 2156025, 3880845, 6468075, 19404225]

約数ペア:

[(1, 19404225), (3, 6468075), (5, 3880845), (9, 2156025), (15, 1293615), (17, 1141425), (19, 1021275), (25, 776169), (27, 718675), (45, 431205), (51, 380475), (57, 340425), (75, 258723), (85, 228285), (89, 218025), (95, 204255), (135, 143735), (153, 126825), (171, 113475), (225, 86241), (255, 76095), (267, 72675), (285, 68085), (323, 60075), (425, 45657), (445, 43605), (459, 42275), (475, 40851), (513, 37825), (675, 28747), (765, 25365), (801, 24225), (855, 22695), (969, 20025), (1275, 15219), (1335, 14535), (1425, 13617), (1513, 12825), (1615, 12015), (1691, 11475), (2225, 8721), (2295, 8455), (2403, 8075), (2565, 7565), (2907, 6675), (3825, 5073), (4005, 4845), (4275, 4539)]