81628960

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72883}}^1$

素因数の和:72905

約数の個数: 48

約数和(自身を含む): 220401216

約数和(自身を除く): 138772256

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72883, 145766, 291532, 364415, 510181, 583064, 728830, 1020362, 1166128, 1457660, 2040724, 2332256, 2550905, 2915320, 4081448, 5101810, 5830640, 8162896, 10203620, 11661280, 16325792, 20407240, 40814480, 81628960]

約数ペア:

[(1, 81628960), (2, 40814480), (4, 20407240), (5, 16325792), (7, 11661280), (8, 10203620), (10, 8162896), (14, 5830640), (16, 5101810), (20, 4081448), (28, 2915320), (32, 2550905), (35, 2332256), (40, 2040724), (56, 1457660), (70, 1166128), (80, 1020362), (112, 728830), (140, 583064), (160, 510181), (224, 364415), (280, 291532), (560, 145766), (1120, 72883)]