64178020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1\times {\mathrm{269}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 137894400

約数和(自身を除く): 73716380

約数列:

[1, 2, 4, 5, 10, 20, 79, 151, 158, 269, 302, 316, 395, 538, 604, 755, 790, 1076, 1345, 1510, 1580, 2690, 3020, 5380, 11929, 21251, 23858, 40619, 42502, 47716, 59645, 81238, 85004, 106255, 119290, 162476, 203095, 212510, 238580, 406190, 425020, 812380, 3208901, 6417802, 12835604, 16044505, 32089010, 64178020]

約数ペア:

[(1, 64178020), (2, 32089010), (4, 16044505), (5, 12835604), (10, 6417802), (20, 3208901), (79, 812380), (151, 425020), (158, 406190), (269, 238580), (302, 212510), (316, 203095), (395, 162476), (538, 119290), (604, 106255), (755, 85004), (790, 81238), (1076, 59645), (1345, 47716), (1510, 42502), (1580, 40619), (2690, 23858), (3020, 21251), (5380, 11929)]