129708280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{249439}}^1$

素因数の和:249463

約数の個数: 32

約数和(自身を含む): 314294400

約数和(自身を除く): 184586120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 249439, 498878, 997756, 1247195, 1995512, 2494390, 3242707, 4988780, 6485414, 9977560, 12970828, 16213535, 25941656, 32427070, 64854140, 129708280]

約数ペア:

[(1, 129708280), (2, 64854140), (4, 32427070), (5, 25941656), (8, 16213535), (10, 12970828), (13, 9977560), (20, 6485414), (26, 4988780), (40, 3242707), (52, 2494390), (65, 1995512), (104, 1247195), (130, 997756), (260, 498878), (520, 249439)]