555440

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:197

約数の個数: 40

約数和(自身を含む): 1325808

約数和(自身を除く): 770368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 131, 212, 262, 265, 424, 524, 530, 655, 848, 1048, 1060, 1310, 2096, 2120, 2620, 4240, 5240, 6943, 10480, 13886, 27772, 34715, 55544, 69430, 111088, 138860, 277720, 555440]

約数ペア:

[(1, 555440), (2, 277720), (4, 138860), (5, 111088), (8, 69430), (10, 55544), (16, 34715), (20, 27772), (40, 13886), (53, 10480), (80, 6943), (106, 5240), (131, 4240), (212, 2620), (262, 2120), (265, 2096), (424, 1310), (524, 1060), (530, 1048), (655, 848)]