20457920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9133}}^1$

素因数の和:9157

約数の個数: 56

約数和(自身を含む): 55680864

約数和(自身を除く): 35222944

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9133, 18266, 36532, 45665, 63931, 73064, 91330, 127862, 146128, 182660, 255724, 292256, 319655, 365320, 511448, 584512, 639310, 730640, 1022896, 1278620, 1461280, 2045792, 2557240, 2922560, 4091584, 5114480, 10228960, 20457920]

約数ペア:

[(1, 20457920), (2, 10228960), (4, 5114480), (5, 4091584), (7, 2922560), (8, 2557240), (10, 2045792), (14, 1461280), (16, 1278620), (20, 1022896), (28, 730640), (32, 639310), (35, 584512), (40, 511448), (56, 365320), (64, 319655), (70, 292256), (80, 255724), (112, 182660), (140, 146128), (160, 127862), (224, 91330), (280, 73064), (320, 63931), (448, 45665), (560, 36532), (1120, 18266), (2240, 9133)]