21006645

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7489}}^1$

素因数の和:7525

約数の個数: 32

約数和(自身を含む): 38828160

約数和(自身を除く): 17821515

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7489, 22467, 37445, 82379, 112335, 127313, 247137, 381939, 411895, 636565, 1235685, 1400443, 1909695, 4201329, 7002215, 21006645]

約数ペア:

[(1, 21006645), (3, 7002215), (5, 4201329), (11, 1909695), (15, 1400443), (17, 1235685), (33, 636565), (51, 411895), (55, 381939), (85, 247137), (165, 127313), (187, 112335), (255, 82379), (561, 37445), (935, 22467), (2805, 7489)]