28781385

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{883}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 48117888

約数和(自身を除く): 19336503

約数列:

[1, 3, 5, 15, 41, 53, 123, 159, 205, 265, 615, 795, 883, 2173, 2649, 4415, 6519, 10865, 13245, 32595, 36203, 46799, 108609, 140397, 181015, 233995, 543045, 701985, 1918759, 5756277, 9593795, 28781385]

約数ペア:

[(1, 28781385), (3, 9593795), (5, 5756277), (15, 1918759), (41, 701985), (53, 543045), (123, 233995), (159, 181015), (205, 140397), (265, 108609), (615, 46799), (795, 36203), (883, 32595), (2173, 13245), (2649, 10865), (4415, 6519)]