20021242880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{157}}^1\times {\mathrm{24907}}^1$

素因数の和:25089

約数の個数: 88

約数和(自身を含む): 48335368848

約数和(自身を除く): 28314125968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 256, 314, 320, 512, 628, 640, 785, 1024, 1256, 1280, 1570, 2512, 2560, 3140, 5024, 5120, 6280, 10048, 12560, 20096, 24907, 25120, 40192, 49814, 50240, 80384, 99628, 100480, 124535, 160768, 199256, 200960, 249070, 398512, 401920, 498140, 797024, 803840, 996280, 1594048, 1992560, 3188096, 3910399, 3985120, 6376192, 7820798, 7970240, 12752384, 15641596, 15940480, 19551995, 25504768, 31283192, 31880960, 39103990, 62566384, 63761920, 78207980, 125132768, 127523840, 156415960, 250265536, 312831920, 500531072, 625663840, 1001062144, 1251327680, 2002124288, 2502655360, 4004248576, 5005310720, 10010621440, 20021242880]

約数ペア:

[(1, 20021242880), (2, 10010621440), (4, 5005310720), (5, 4004248576), (8, 2502655360), (10, 2002124288), (16, 1251327680), (20, 1001062144), (32, 625663840), (40, 500531072), (64, 312831920), (80, 250265536), (128, 156415960), (157, 127523840), (160, 125132768), (256, 78207980), (314, 63761920), (320, 62566384), (512, 39103990), (628, 31880960), (640, 31283192), (785, 25504768), (1024, 19551995), (1256, 15940480), (1280, 15641596), (1570, 12752384), (2512, 7970240), (2560, 7820798), (3140, 6376192), (5024, 3985120), (5120, 3910399), (6280, 3188096), (10048, 1992560), (12560, 1594048), (20096, 996280), (24907, 803840), (25120, 797024), (40192, 498140), (49814, 401920), (50240, 398512), (80384, 249070), (99628, 200960), (100480, 199256), (124535, 160768)]