21116900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{311}}^1$

素因数の和:429

約数の個数: 72

約数和(自身を含む): 53079936

約数和(自身を除く): 31963036

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 97, 100, 140, 175, 194, 311, 350, 388, 485, 622, 679, 700, 970, 1244, 1358, 1555, 1940, 2177, 2425, 2716, 3110, 3395, 4354, 4850, 6220, 6790, 7775, 8708, 9700, 10885, 13580, 15550, 16975, 21770, 30167, 31100, 33950, 43540, 54425, 60334, 67900, 108850, 120668, 150835, 211169, 217700, 301670, 422338, 603340, 754175, 844676, 1055845, 1508350, 2111690, 3016700, 4223380, 5279225, 10558450, 21116900]

約数ペア:

[(1, 21116900), (2, 10558450), (4, 5279225), (5, 4223380), (7, 3016700), (10, 2111690), (14, 1508350), (20, 1055845), (25, 844676), (28, 754175), (35, 603340), (50, 422338), (70, 301670), (97, 217700), (100, 211169), (140, 150835), (175, 120668), (194, 108850), (311, 67900), (350, 60334), (388, 54425), (485, 43540), (622, 33950), (679, 31100), (700, 30167), (970, 21770), (1244, 16975), (1358, 15550), (1555, 13580), (1940, 10885), (2177, 9700), (2425, 8708), (2716, 7775), (3110, 6790), (3395, 6220), (4354, 4850)]