21234640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5417}}^1$

素因数の和:5444

約数の個数: 60

約数和(自身を含む): 57441636

約数和(自身を除く): 36206996

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5417, 10834, 21668, 27085, 37919, 43336, 54170, 75838, 86672, 108340, 151676, 189595, 216680, 265433, 303352, 379190, 433360, 530866, 606704, 758380, 1061732, 1327165, 1516760, 2123464, 2654330, 3033520, 4246928, 5308660, 10617320, 21234640]

約数ペア:

[(1, 21234640), (2, 10617320), (4, 5308660), (5, 4246928), (7, 3033520), (8, 2654330), (10, 2123464), (14, 1516760), (16, 1327165), (20, 1061732), (28, 758380), (35, 606704), (40, 530866), (49, 433360), (56, 379190), (70, 303352), (80, 265433), (98, 216680), (112, 189595), (140, 151676), (196, 108340), (245, 86672), (280, 75838), (392, 54170), (490, 43336), (560, 37919), (784, 27085), (980, 21668), (1960, 10834), (3920, 5417)]