257307610

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:655

約数の個数: 64

約数和(自身を含む): 544693248

約数和(自身を除く): 287385638

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 70, 94, 197, 235, 329, 394, 397, 470, 658, 794, 985, 1379, 1645, 1970, 1985, 2758, 2779, 3290, 3970, 5558, 6895, 9259, 13790, 13895, 18518, 18659, 27790, 37318, 46295, 64813, 78209, 92590, 93295, 129626, 130613, 156418, 186590, 261226, 324065, 391045, 547463, 648130, 653065, 782090, 1094926, 1306130, 2737315, 3675823, 5474630, 7351646, 18379115, 25730761, 36758230, 51461522, 128653805, 257307610]

約数ペア:

[(1, 257307610), (2, 128653805), (5, 51461522), (7, 36758230), (10, 25730761), (14, 18379115), (35, 7351646), (47, 5474630), (70, 3675823), (94, 2737315), (197, 1306130), (235, 1094926), (329, 782090), (394, 653065), (397, 648130), (470, 547463), (658, 391045), (794, 324065), (985, 261226), (1379, 186590), (1645, 156418), (1970, 130613), (1985, 129626), (2758, 93295), (2779, 92590), (3290, 78209), (3970, 64813), (5558, 46295), (6895, 37318), (9259, 27790), (13790, 18659), (13895, 18518)]