420594580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{7723}}^1$

素因数の和:8128

約数の個数: 48

約数和(自身を含む): 1012152960

約数和(自身を除く): 591558380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 389, 778, 1556, 1945, 2723, 3890, 5446, 7723, 7780, 10892, 13615, 15446, 27230, 30892, 38615, 54061, 54460, 77230, 108122, 154460, 216244, 270305, 540610, 1081220, 3004247, 6008494, 12016988, 15021235, 21029729, 30042470, 42059458, 60084940, 84118916, 105148645, 210297290, 420594580]

約数ペア:

[(1, 420594580), (2, 210297290), (4, 105148645), (5, 84118916), (7, 60084940), (10, 42059458), (14, 30042470), (20, 21029729), (28, 15021235), (35, 12016988), (70, 6008494), (140, 3004247), (389, 1081220), (778, 540610), (1556, 270305), (1945, 216244), (2723, 154460), (3890, 108122), (5446, 77230), (7723, 54460), (7780, 54061), (10892, 38615), (13615, 30892), (15446, 27230)]