21155750

素因数分解:

$2^1\times 5^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1$

素因数の和:199

約数の個数: 96

約数和(自身を含む): 50577696

約数和(自身を除く): 29421946

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 35, 49, 50, 55, 70, 77, 98, 110, 125, 154, 157, 175, 245, 250, 275, 314, 350, 385, 490, 539, 550, 770, 785, 875, 1078, 1099, 1225, 1375, 1570, 1727, 1750, 1925, 2198, 2450, 2695, 2750, 3454, 3850, 3925, 5390, 5495, 6125, 7693, 7850, 8635, 9625, 10990, 12089, 12250, 13475, 15386, 17270, 19250, 19625, 24178, 26950, 27475, 38465, 39250, 43175, 54950, 60445, 67375, 76930, 84623, 86350, 120890, 134750, 137375, 169246, 192325, 215875, 274750, 302225, 384650, 423115, 431750, 604450, 846230, 961625, 1511125, 1923250, 2115575, 3022250, 4231150, 10577875, 21155750]

約数ペア:

[(1, 21155750), (2, 10577875), (5, 4231150), (7, 3022250), (10, 2115575), (11, 1923250), (14, 1511125), (22, 961625), (25, 846230), (35, 604450), (49, 431750), (50, 423115), (55, 384650), (70, 302225), (77, 274750), (98, 215875), (110, 192325), (125, 169246), (154, 137375), (157, 134750), (175, 120890), (245, 86350), (250, 84623), (275, 76930), (314, 67375), (350, 60445), (385, 54950), (490, 43175), (539, 39250), (550, 38465), (770, 27475), (785, 26950), (875, 24178), (1078, 19625), (1099, 19250), (1225, 17270), (1375, 15386), (1570, 13475), (1727, 12250), (1750, 12089), (1925, 10990), (2198, 9625), (2450, 8635), (2695, 7850), (2750, 7693), (3454, 6125), (3850, 5495), (3925, 5390)]