399698720

素因数分解:

$2^5\times 5^1\times {\mathrm{1543}}^1\times {\mathrm{1619}}^1$

素因数の和:3177

約数の個数: 48

約数和(自身を含む): 945483840

約数和(自身を除く): 545785120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1543, 1619, 3086, 3238, 6172, 6476, 7715, 8095, 12344, 12952, 15430, 16190, 24688, 25904, 30860, 32380, 49376, 51808, 61720, 64760, 123440, 129520, 246880, 259040, 2498117, 4996234, 9992468, 12490585, 19984936, 24981170, 39969872, 49962340, 79939744, 99924680, 199849360, 399698720]

約数ペア:

[(1, 399698720), (2, 199849360), (4, 99924680), (5, 79939744), (8, 49962340), (10, 39969872), (16, 24981170), (20, 19984936), (32, 12490585), (40, 9992468), (80, 4996234), (160, 2498117), (1543, 259040), (1619, 246880), (3086, 129520), (3238, 123440), (6172, 64760), (6476, 61720), (7715, 51808), (8095, 49376), (12344, 32380), (12952, 30860), (15430, 25904), (16190, 24688)]