20523909

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:609

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 12377211

約数列:

[1, 3, 7, 21, 29, 67, 87, 201, 203, 469, 503, 609, 1407, 1509, 1943, 3521, 5829, 10563, 13601, 14587, 33701, 40803, 43761, 101103, 102109, 235907, 306327, 707721, 977329, 2931987, 6841303, 20523909]

約数ペア:

[(1, 20523909), (3, 6841303), (7, 2931987), (21, 977329), (29, 707721), (67, 306327), (87, 235907), (201, 102109), (203, 101103), (469, 43761), (503, 40803), (609, 33701), (1407, 14587), (1509, 13601), (1943, 10563), (3521, 5829)]