21250095

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{317}}^1$

素因数の和:475

約数の個数: 32

約数和(自身を含む): 35259840

約数和(自身を除く): 14009745

約数列:

[1, 3, 5, 15, 41, 109, 123, 205, 317, 327, 545, 615, 951, 1585, 1635, 4469, 4755, 12997, 13407, 22345, 34553, 38991, 64985, 67035, 103659, 172765, 194955, 518295, 1416673, 4250019, 7083365, 21250095]

約数ペア:

[(1, 21250095), (3, 7083365), (5, 4250019), (15, 1416673), (41, 518295), (109, 194955), (123, 172765), (205, 103659), (317, 67035), (327, 64985), (545, 38991), (615, 34553), (951, 22345), (1585, 13407), (1635, 12997), (4469, 4755)]