77964880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19889}}^1$

素因数の和:19916

約数の個数: 60

約数和(自身を含む): 210873780

約数和(自身を除く): 132908900

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, 19889, 39778, 79556, 99445, 139223, 159112, 198890, 278446, 318224, 397780, 556892, 696115, 795560, 974561, 1113784, 1392230, 1591120, 1949122, 2227568, 2784460, 3898244, 4872805, 5568920, 7796488, 9745610, 11137840, 15592976, 19491220, 38982440, 77964880]

約数ペア:

[(1, 77964880), (2, 38982440), (4, 19491220), (5, 15592976), (7, 11137840), (8, 9745610), (10, 7796488), (14, 5568920), (16, 4872805), (20, 3898244), (28, 2784460), (35, 2227568), (40, 1949122), (49, 1591120), (56, 1392230), (70, 1113784), (80, 974561), (98, 795560), (112, 696115), (140, 556892), (196, 397780), (245, 318224), (280, 278446), (392, 198890), (490, 159112), (560, 139223), (784, 99445), (980, 79556), (1960, 39778), (3920, 19889)]