21387330

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3347}}^1$

素因数の和:3431

約数の個数: 48

約数和(自身を含む): 56407104

約数和(自身を除く): 35019774

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 71, 90, 142, 213, 355, 426, 639, 710, 1065, 1278, 2130, 3195, 3347, 6390, 6694, 10041, 16735, 20082, 30123, 33470, 50205, 60246, 100410, 150615, 237637, 301230, 475274, 712911, 1188185, 1425822, 2138733, 2376370, 3564555, 4277466, 7129110, 10693665, 21387330]

約数ペア:

[(1, 21387330), (2, 10693665), (3, 7129110), (5, 4277466), (6, 3564555), (9, 2376370), (10, 2138733), (15, 1425822), (18, 1188185), (30, 712911), (45, 475274), (71, 301230), (90, 237637), (142, 150615), (213, 100410), (355, 60246), (426, 50205), (639, 33470), (710, 30123), (1065, 20082), (1278, 16735), (2130, 10041), (3195, 6694), (3347, 6390)]