19947525

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 36456000

約数和(自身を除く): 16508475

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 123, 195, 205, 325, 499, 533, 615, 975, 1025, 1497, 1599, 2495, 2665, 3075, 6487, 7485, 7995, 12475, 13325, 19461, 20459, 32435, 37425, 39975, 61377, 97305, 102295, 162175, 265967, 306885, 486525, 511475, 797901, 1329835, 1534425, 3989505, 6649175, 19947525]

約数ペア:

[(1, 19947525), (3, 6649175), (5, 3989505), (13, 1534425), (15, 1329835), (25, 797901), (39, 511475), (41, 486525), (65, 306885), (75, 265967), (123, 162175), (195, 102295), (205, 97305), (325, 61377), (499, 39975), (533, 37425), (615, 32435), (975, 20459), (1025, 19461), (1497, 13325), (1599, 12475), (2495, 7995), (2665, 7485), (3075, 6487)]