21036225

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2357}}^1$

素因数の和:2394

約数の個数: 48

約数和(自身を含む): 42104448

約数和(自身を除く): 21068223

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 175, 255, 357, 425, 525, 595, 1275, 1785, 2357, 2975, 7071, 8925, 11785, 16499, 35355, 40069, 49497, 58925, 82495, 120207, 176775, 200345, 247485, 280483, 412475, 601035, 841449, 1001725, 1237425, 1402415, 3005175, 4207245, 7012075, 21036225]

約数ペア:

[(1, 21036225), (3, 7012075), (5, 4207245), (7, 3005175), (15, 1402415), (17, 1237425), (21, 1001725), (25, 841449), (35, 601035), (51, 412475), (75, 280483), (85, 247485), (105, 200345), (119, 176775), (175, 120207), (255, 82495), (357, 58925), (425, 49497), (525, 40069), (595, 35355), (1275, 16499), (1785, 11785), (2357, 8925), (2975, 7071)]