51640720

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{8171}}^1$

素因数の和:8263

約数の個数: 40

約数和(自身を含む): 121599360

約数和(自身を除く): 69958640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 8171, 16342, 32684, 40855, 65368, 81710, 130736, 163420, 326840, 645509, 653680, 1291018, 2582036, 3227545, 5164072, 6455090, 10328144, 12910180, 25820360, 51640720]

約数ペア:

[(1, 51640720), (2, 25820360), (4, 12910180), (5, 10328144), (8, 6455090), (10, 5164072), (16, 3227545), (20, 2582036), (40, 1291018), (79, 653680), (80, 645509), (158, 326840), (316, 163420), (395, 130736), (632, 81710), (790, 65368), (1264, 40855), (1580, 32684), (3160, 16342), (6320, 8171)]