21640000

素因数分解:

$2^6\times 5^4\times {\mathrm{541}}^1$

素因数の和:573

約数の個数: 70

約数和(自身を含む): 53759354

約数和(自身を除く): 32119354

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 541, 625, 800, 1000, 1082, 1250, 1600, 2000, 2164, 2500, 2705, 4000, 4328, 5000, 5410, 8000, 8656, 10000, 10820, 13525, 17312, 20000, 21640, 27050, 34624, 40000, 43280, 54100, 67625, 86560, 108200, 135250, 173120, 216400, 270500, 338125, 432800, 541000, 676250, 865600, 1082000, 1352500, 2164000, 2705000, 4328000, 5410000, 10820000, 21640000]

約数ペア:

[(1, 21640000), (2, 10820000), (4, 5410000), (5, 4328000), (8, 2705000), (10, 2164000), (16, 1352500), (20, 1082000), (25, 865600), (32, 676250), (40, 541000), (50, 432800), (64, 338125), (80, 270500), (100, 216400), (125, 173120), (160, 135250), (200, 108200), (250, 86560), (320, 67625), (400, 54100), (500, 43280), (541, 40000), (625, 34624), (800, 27050), (1000, 21640), (1082, 20000), (1250, 17312), (1600, 13525), (2000, 10820), (2164, 10000), (2500, 8656), (2705, 8000), (4000, 5410), (4328, 5000)]