1386505820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509}}^1\times {\mathrm{19457}}^1$

素因数の和:19982

約数の個数: 48

約数和(自身を含む): 3334322880

約数和(自身を除く): 1947817060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509, 1018, 2036, 2545, 3563, 5090, 7126, 10180, 14252, 17815, 19457, 35630, 38914, 71260, 77828, 97285, 136199, 194570, 272398, 389140, 544796, 680995, 1361990, 2723980, 9903613, 19807226, 39614452, 49518065, 69325291, 99036130, 138650582, 198072260, 277301164, 346626455, 693252910, 1386505820]

約数ペア:

[(1, 1386505820), (2, 693252910), (4, 346626455), (5, 277301164), (7, 198072260), (10, 138650582), (14, 99036130), (20, 69325291), (28, 49518065), (35, 39614452), (70, 19807226), (140, 9903613), (509, 2723980), (1018, 1361990), (2036, 680995), (2545, 544796), (3563, 389140), (5090, 272398), (7126, 194570), (10180, 136199), (14252, 97285), (17815, 77828), (19457, 71260), (35630, 38914)]