21398085

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{863}}^1$

素因数の和:922

約数の個数: 48

約数和(自身を含む): 40435200

約数和(自身を除く): 19037115

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 261, 285, 435, 551, 855, 863, 1305, 1653, 2589, 2755, 4315, 4959, 7767, 8265, 12945, 16397, 24795, 25027, 38835, 49191, 75081, 81985, 125135, 147573, 225243, 245955, 375405, 475513, 737865, 1126215, 1426539, 2377565, 4279617, 7132695, 21398085]

約数ペア:

[(1, 21398085), (3, 7132695), (5, 4279617), (9, 2377565), (15, 1426539), (19, 1126215), (29, 737865), (45, 475513), (57, 375405), (87, 245955), (95, 225243), (145, 147573), (171, 125135), (261, 81985), (285, 75081), (435, 49191), (551, 38835), (855, 25027), (863, 24795), (1305, 16397), (1653, 12945), (2589, 8265), (2755, 7767), (4315, 4959)]