207646540

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1\times {\mathrm{661}}^1$

素因数の和:922

約数の個数: 48

約数和(自身を含む): 443751840

約数和(自身を除く): 236105300

約数列:

[1, 2, 4, 5, 10, 20, 113, 139, 226, 278, 452, 556, 565, 661, 695, 1130, 1322, 1390, 2260, 2644, 2780, 3305, 6610, 13220, 15707, 31414, 62828, 74693, 78535, 91879, 149386, 157070, 183758, 298772, 314140, 367516, 373465, 459395, 746930, 918790, 1493860, 1837580, 10382327, 20764654, 41529308, 51911635, 103823270, 207646540]

約数ペア:

[(1, 207646540), (2, 103823270), (4, 51911635), (5, 41529308), (10, 20764654), (20, 10382327), (113, 1837580), (139, 1493860), (226, 918790), (278, 746930), (452, 459395), (556, 373465), (565, 367516), (661, 314140), (695, 298772), (1130, 183758), (1322, 157070), (1390, 149386), (2260, 91879), (2644, 78535), (2780, 74693), (3305, 62828), (6610, 31414), (13220, 15707)]