20177920

素因数分解:

$2^{10}\times 5^1\times 7^1\times {\mathrm{563}}^1$

素因数の和:595

約数の個数: 88

約数和(自身を含む): 55416384

約数和(自身を除く): 35238464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 512, 560, 563, 640, 896, 1024, 1120, 1126, 1280, 1792, 2240, 2252, 2560, 2815, 3584, 3941, 4480, 4504, 5120, 5630, 7168, 7882, 8960, 9008, 11260, 15764, 17920, 18016, 19705, 22520, 31528, 35840, 36032, 39410, 45040, 63056, 72064, 78820, 90080, 126112, 144128, 157640, 180160, 252224, 288256, 315280, 360320, 504448, 576512, 630560, 720640, 1008896, 1261120, 1441280, 2017792, 2522240, 2882560, 4035584, 5044480, 10088960, 20177920]

約数ペア:

[(1, 20177920), (2, 10088960), (4, 5044480), (5, 4035584), (7, 2882560), (8, 2522240), (10, 2017792), (14, 1441280), (16, 1261120), (20, 1008896), (28, 720640), (32, 630560), (35, 576512), (40, 504448), (56, 360320), (64, 315280), (70, 288256), (80, 252224), (112, 180160), (128, 157640), (140, 144128), (160, 126112), (224, 90080), (256, 78820), (280, 72064), (320, 63056), (448, 45040), (512, 39410), (560, 36032), (563, 35840), (640, 31528), (896, 22520), (1024, 19705), (1120, 18016), (1126, 17920), (1280, 15764), (1792, 11260), (2240, 9008), (2252, 8960), (2560, 7882), (2815, 7168), (3584, 5630), (3941, 5120), (4480, 4504)]