127810000

素因数分解:

$2^4\times 5^4\times {\mathrm{12781}}^1$

素因数の和:12809

約数の個数: 50

約数和(自身を含む): 309465002

約数和(自身を除く): 181655002

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 5000, 10000, 12781, 25562, 51124, 63905, 102248, 127810, 204496, 255620, 319525, 511240, 639050, 1022480, 1278100, 1597625, 2556200, 3195250, 5112400, 6390500, 7988125, 12781000, 15976250, 25562000, 31952500, 63905000, 127810000]

約数ペア:

[(1, 127810000), (2, 63905000), (4, 31952500), (5, 25562000), (8, 15976250), (10, 12781000), (16, 7988125), (20, 6390500), (25, 5112400), (40, 3195250), (50, 2556200), (80, 1597625), (100, 1278100), (125, 1022480), (200, 639050), (250, 511240), (400, 319525), (500, 255620), (625, 204496), (1000, 127810), (1250, 102248), (2000, 63905), (2500, 51124), (5000, 25562), (10000, 12781)]