12754640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 80

約数和(自身を含む): 31664640

約数和(自身を除く): 18910000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 139, 148, 155, 185, 248, 278, 296, 310, 370, 496, 556, 592, 620, 695, 740, 1112, 1147, 1240, 1390, 1480, 2224, 2294, 2480, 2780, 2960, 4309, 4588, 5143, 5560, 5735, 8618, 9176, 10286, 11120, 11470, 17236, 18352, 20572, 21545, 22940, 25715, 34472, 41144, 43090, 45880, 51430, 68944, 82288, 86180, 91760, 102860, 159433, 172360, 205720, 318866, 344720, 411440, 637732, 797165, 1275464, 1594330, 2550928, 3188660, 6377320, 12754640]

約数ペア:

[(1, 12754640), (2, 6377320), (4, 3188660), (5, 2550928), (8, 1594330), (10, 1275464), (16, 797165), (20, 637732), (31, 411440), (37, 344720), (40, 318866), (62, 205720), (74, 172360), (80, 159433), (124, 102860), (139, 91760), (148, 86180), (155, 82288), (185, 68944), (248, 51430), (278, 45880), (296, 43090), (310, 41144), (370, 34472), (496, 25715), (556, 22940), (592, 21545), (620, 20572), (695, 18352), (740, 17236), (1112, 11470), (1147, 11120), (1240, 10286), (1390, 9176), (1480, 8618), (2224, 5735), (2294, 5560), (2480, 5143), (2780, 4588), (2960, 4309)]