278914000

素因数分解:

$2^4\times 5^3\times {\mathrm{139457}}^1$

素因数の和:139480

約数の個数: 40

約数和(自身を含む): 674418888

約数和(自身を除く): 395504888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 1000, 2000, 139457, 278914, 557828, 697285, 1115656, 1394570, 2231312, 2789140, 3486425, 5578280, 6972850, 11156560, 13945700, 17432125, 27891400, 34864250, 55782800, 69728500, 139457000, 278914000]

約数ペア:

[(1, 278914000), (2, 139457000), (4, 69728500), (5, 55782800), (8, 34864250), (10, 27891400), (16, 17432125), (20, 13945700), (25, 11156560), (40, 6972850), (50, 5578280), (80, 3486425), (100, 2789140), (125, 2231312), (200, 1394570), (250, 1115656), (400, 697285), (500, 557828), (1000, 278914), (2000, 139457)]