40288520

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11317}}^1$

素因数の和:11417

約数の個数: 32

約数和(自身を含む): 91675800

約数和(自身を除く): 51387280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 11317, 22634, 45268, 56585, 90536, 113170, 226340, 452680, 1007213, 2014426, 4028852, 5036065, 8057704, 10072130, 20144260, 40288520]

約数ペア:

[(1, 40288520), (2, 20144260), (4, 10072130), (5, 8057704), (8, 5036065), (10, 4028852), (20, 2014426), (40, 1007213), (89, 452680), (178, 226340), (356, 113170), (445, 90536), (712, 56585), (890, 45268), (1780, 22634), (3560, 11317)]