128439605

素因数分解:

$5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1\times {\mathrm{257}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 179815680

約数和(自身を除く): 51376075

約数列:

[1, 5, 7, 35, 109, 131, 257, 545, 655, 763, 917, 1285, 1799, 3815, 4585, 8995, 14279, 28013, 33667, 71395, 99953, 140065, 168335, 196091, 235669, 499765, 980455, 1178345, 3669703, 18348515, 25687921, 128439605]

約数ペア:

[(1, 128439605), (5, 25687921), (7, 18348515), (35, 3669703), (109, 1178345), (131, 980455), (257, 499765), (545, 235669), (655, 196091), (763, 168335), (917, 140065), (1285, 99953), (1799, 71395), (3815, 33667), (4585, 28013), (8995, 14279)]