321280180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{877}}^1\times {\mathrm{1409}}^1$

素因数の和:2308

約数の個数: 48

約数和(自身を含む): 727932240

約数和(自身を除く): 406652060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 877, 1409, 1754, 2818, 3508, 4385, 5636, 7045, 8770, 11401, 14090, 17540, 18317, 22802, 28180, 36634, 45604, 57005, 73268, 91585, 114010, 183170, 228020, 366340, 1235693, 2471386, 4942772, 6178465, 12356930, 16064009, 24713860, 32128018, 64256036, 80320045, 160640090, 321280180]

約数ペア:

[(1, 321280180), (2, 160640090), (4, 80320045), (5, 64256036), (10, 32128018), (13, 24713860), (20, 16064009), (26, 12356930), (52, 6178465), (65, 4942772), (130, 2471386), (260, 1235693), (877, 366340), (1409, 228020), (1754, 183170), (2818, 114010), (3508, 91585), (4385, 73268), (5636, 57005), (7045, 45604), (8770, 36634), (11401, 28180), (14090, 22802), (17540, 18317)]