19917760

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{929}}^1$

素因数の和:1013

約数の個数: 56

約数和(自身を含む): 48188880

約数和(自身を除く): 28271120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 929, 1072, 1340, 1858, 2144, 2680, 3716, 4288, 4645, 5360, 7432, 9290, 10720, 14864, 18580, 21440, 29728, 37160, 59456, 62243, 74320, 124486, 148640, 248972, 297280, 311215, 497944, 622430, 995888, 1244860, 1991776, 2489720, 3983552, 4979440, 9958880, 19917760]

約数ペア:

[(1, 19917760), (2, 9958880), (4, 4979440), (5, 3983552), (8, 2489720), (10, 1991776), (16, 1244860), (20, 995888), (32, 622430), (40, 497944), (64, 311215), (67, 297280), (80, 248972), (134, 148640), (160, 124486), (268, 74320), (320, 62243), (335, 59456), (536, 37160), (670, 29728), (929, 21440), (1072, 18580), (1340, 14864), (1858, 10720), (2144, 9290), (2680, 7432), (3716, 5360), (4288, 4645)]