21097790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{547}}^1$

素因数の和:609

約数の個数: 64

約数和(自身を含む): 47347200

約数和(自身を除く): 26249410

約数列:

[1, 2, 5, 7, 10, 14, 19, 29, 35, 38, 58, 70, 95, 133, 145, 190, 203, 266, 290, 406, 547, 551, 665, 1015, 1094, 1102, 1330, 2030, 2735, 2755, 3829, 3857, 5470, 5510, 7658, 7714, 10393, 15863, 19145, 19285, 20786, 31726, 38290, 38570, 51965, 72751, 79315, 103930, 111041, 145502, 158630, 222082, 301397, 363755, 555205, 602794, 727510, 1110410, 1506985, 2109779, 3013970, 4219558, 10548895, 21097790]

約数ペア:

[(1, 21097790), (2, 10548895), (5, 4219558), (7, 3013970), (10, 2109779), (14, 1506985), (19, 1110410), (29, 727510), (35, 602794), (38, 555205), (58, 363755), (70, 301397), (95, 222082), (133, 158630), (145, 145502), (190, 111041), (203, 103930), (266, 79315), (290, 72751), (406, 51965), (547, 38570), (551, 38290), (665, 31726), (1015, 20786), (1094, 19285), (1102, 19145), (1330, 15863), (2030, 10393), (2735, 7714), (2755, 7658), (3829, 5510), (3857, 5470)]