21167357985

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{54361}}^1$

素因数の和:54898

約数の個数: 48

約数和(自身を含む): 38925366480

約数和(自身を除く): 17758008495

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 509, 765, 1527, 2545, 4581, 7635, 8653, 22905, 25959, 43265, 54361, 77877, 129795, 163083, 271805, 389385, 489249, 815415, 924137, 2446245, 2772411, 4620685, 8317233, 13862055, 27669749, 41586165, 83009247, 138348745, 249027741, 415046235, 470385733, 1245138705, 1411157199, 2351928665, 4233471597, 7055785995, 21167357985]

約数ペア:

[(1, 21167357985), (3, 7055785995), (5, 4233471597), (9, 2351928665), (15, 1411157199), (17, 1245138705), (45, 470385733), (51, 415046235), (85, 249027741), (153, 138348745), (255, 83009247), (509, 41586165), (765, 27669749), (1527, 13862055), (2545, 8317233), (4581, 4620685), (7635, 2772411), (8653, 2446245), (22905, 924137), (25959, 815415), (43265, 489249), (54361, 389385), (77877, 271805), (129795, 163083)]