20954895

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2621}}^1$

素因数の和:2683

約数の個数: 32

約数和(自身を含む): 37001664

約数和(自身を除く): 16046769

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 195, 205, 533, 615, 1599, 2621, 2665, 7863, 7995, 13105, 34073, 39315, 102219, 107461, 170365, 322383, 511095, 537305, 1396993, 1611915, 4190979, 6984965, 20954895]

約数ペア:

[(1, 20954895), (3, 6984965), (5, 4190979), (13, 1611915), (15, 1396993), (39, 537305), (41, 511095), (65, 322383), (123, 170365), (195, 107461), (205, 102219), (533, 39315), (615, 34073), (1599, 13105), (2621, 7995), (2665, 7863)]