16280740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:509

約数の個数: 72

約数和(自身を含む): 40937400

約数和(自身を除く): 24656660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 49, 70, 74, 98, 140, 148, 185, 196, 245, 259, 370, 449, 490, 518, 740, 898, 980, 1036, 1295, 1796, 1813, 2245, 2590, 3143, 3626, 4490, 5180, 6286, 7252, 8980, 9065, 12572, 15715, 16613, 18130, 22001, 31430, 33226, 36260, 44002, 62860, 66452, 83065, 88004, 110005, 116291, 166130, 220010, 232582, 332260, 440020, 465164, 581455, 814037, 1162910, 1628074, 2325820, 3256148, 4070185, 8140370, 16280740]

約数ペア:

[(1, 16280740), (2, 8140370), (4, 4070185), (5, 3256148), (7, 2325820), (10, 1628074), (14, 1162910), (20, 814037), (28, 581455), (35, 465164), (37, 440020), (49, 332260), (70, 232582), (74, 220010), (98, 166130), (140, 116291), (148, 110005), (185, 88004), (196, 83065), (245, 66452), (259, 62860), (370, 44002), (449, 36260), (490, 33226), (518, 31430), (740, 22001), (898, 18130), (980, 16613), (1036, 15715), (1295, 12572), (1796, 9065), (1813, 8980), (2245, 7252), (2590, 6286), (3143, 5180), (3626, 4490)]