20558000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^1\times {\mathrm{541}}^1$

素因数の和:583

約数の個数: 80

約数和(自身を含む): 52422240

約数和(自身を除く): 31864240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 125, 152, 190, 200, 250, 304, 380, 400, 475, 500, 541, 760, 950, 1000, 1082, 1520, 1900, 2000, 2164, 2375, 2705, 3800, 4328, 4750, 5410, 7600, 8656, 9500, 10279, 10820, 13525, 19000, 20558, 21640, 27050, 38000, 41116, 43280, 51395, 54100, 67625, 82232, 102790, 108200, 135250, 164464, 205580, 216400, 256975, 270500, 411160, 513950, 541000, 822320, 1027900, 1082000, 1284875, 2055800, 2569750, 4111600, 5139500, 10279000, 20558000]

約数ペア:

[(1, 20558000), (2, 10279000), (4, 5139500), (5, 4111600), (8, 2569750), (10, 2055800), (16, 1284875), (19, 1082000), (20, 1027900), (25, 822320), (38, 541000), (40, 513950), (50, 411160), (76, 270500), (80, 256975), (95, 216400), (100, 205580), (125, 164464), (152, 135250), (190, 108200), (200, 102790), (250, 82232), (304, 67625), (380, 54100), (400, 51395), (475, 43280), (500, 41116), (541, 38000), (760, 27050), (950, 21640), (1000, 20558), (1082, 19000), (1520, 13525), (1900, 10820), (2000, 10279), (2164, 9500), (2375, 8656), (2705, 7600), (3800, 5410), (4328, 4750)]