71778280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{659}}^1$

素因数の和:1066

約数の個数: 64

約数和(自身を含む): 185328000

約数和(自身を除く): 113549720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 389, 659, 778, 1318, 1556, 1945, 2636, 2723, 3112, 3295, 3890, 4613, 5272, 5446, 6590, 7780, 9226, 10892, 13180, 13615, 15560, 18452, 21784, 23065, 26360, 27230, 36904, 46130, 54460, 92260, 108920, 184520, 256351, 512702, 1025404, 1281755, 1794457, 2050808, 2563510, 3588914, 5127020, 7177828, 8972285, 10254040, 14355656, 17944570, 35889140, 71778280]

約数ペア:

[(1, 71778280), (2, 35889140), (4, 17944570), (5, 14355656), (7, 10254040), (8, 8972285), (10, 7177828), (14, 5127020), (20, 3588914), (28, 2563510), (35, 2050808), (40, 1794457), (56, 1281755), (70, 1025404), (140, 512702), (280, 256351), (389, 184520), (659, 108920), (778, 92260), (1318, 54460), (1556, 46130), (1945, 36904), (2636, 27230), (2723, 26360), (3112, 23065), (3295, 21784), (3890, 18452), (4613, 15560), (5272, 13615), (5446, 13180), (6590, 10892), (7780, 9226)]