28557315

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{277}}^1$

素因数の和:396

約数の個数: 48

約数和(自身を含む): 52041600

約数和(自身を除く): 23484285

約数列:

[1, 3, 5, 9, 15, 29, 45, 79, 87, 145, 237, 261, 277, 395, 435, 711, 831, 1185, 1305, 1385, 2291, 2493, 3555, 4155, 6873, 8033, 11455, 12465, 20619, 21883, 24099, 34365, 40165, 65649, 72297, 103095, 109415, 120495, 196947, 328245, 361485, 634607, 984735, 1903821, 3173035, 5711463, 9519105, 28557315]

約数ペア:

[(1, 28557315), (3, 9519105), (5, 5711463), (9, 3173035), (15, 1903821), (29, 984735), (45, 634607), (79, 361485), (87, 328245), (145, 196947), (237, 120495), (261, 109415), (277, 103095), (395, 72297), (435, 65649), (711, 40165), (831, 34365), (1185, 24099), (1305, 21883), (1385, 20619), (2291, 12465), (2493, 11455), (3555, 8033), (4155, 6873)]