389937585

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{293}}^1\times {\mathrm{307}}^1$

素因数の和:642

約数の個数: 48

約数和(自身を含む): 667187136

約数和(自身を除く): 277249551

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 293, 307, 867, 879, 921, 1445, 1465, 1535, 4335, 4395, 4605, 4981, 5219, 14943, 15657, 24905, 26095, 74715, 78285, 84677, 88723, 89951, 254031, 266169, 269853, 423385, 443615, 449755, 1270155, 1330845, 1349265, 1529167, 4587501, 7645835, 22937505, 25995839, 77987517, 129979195, 389937585]

約数ペア:

[(1, 389937585), (3, 129979195), (5, 77987517), (15, 25995839), (17, 22937505), (51, 7645835), (85, 4587501), (255, 1529167), (289, 1349265), (293, 1330845), (307, 1270155), (867, 449755), (879, 443615), (921, 423385), (1445, 269853), (1465, 266169), (1535, 254031), (4335, 89951), (4395, 88723), (4605, 84677), (4981, 78285), (5219, 74715), (14943, 26095), (15657, 24905)]