21000974421

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{360637}}^1$

素因数の和:360753

約数の個数: 32

約数和(自身を含む): 33236398080

約数和(自身を除く): 12235423659

約数列:

[1, 3, 7, 21, 47, 59, 141, 177, 329, 413, 987, 1239, 2773, 8319, 19411, 58233, 360637, 1081911, 2524459, 7573377, 16949939, 21277583, 50849817, 63832749, 118649573, 148943081, 355948719, 446829243, 1000046401, 3000139203, 7000324807, 21000974421]

約数ペア:

[(1, 21000974421), (3, 7000324807), (7, 3000139203), (21, 1000046401), (47, 446829243), (59, 355948719), (141, 148943081), (177, 118649573), (329, 63832749), (413, 50849817), (987, 21277583), (1239, 16949939), (2773, 7573377), (8319, 2524459), (19411, 1081911), (58233, 360637)]