2551780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1657}}^1$

素因数の和:1684

約数の個数: 48

約数和(自身を含む): 6685056

約数和(自身を除く): 4133276

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 1657, 3314, 6628, 8285, 11599, 16570, 18227, 23198, 33140, 36454, 46396, 57995, 72908, 91135, 115990, 127589, 182270, 231980, 255178, 364540, 510356, 637945, 1275890, 2551780]

約数ペア:

[(1, 2551780), (2, 1275890), (4, 637945), (5, 510356), (7, 364540), (10, 255178), (11, 231980), (14, 182270), (20, 127589), (22, 115990), (28, 91135), (35, 72908), (44, 57995), (55, 46396), (70, 36454), (77, 33140), (110, 23198), (140, 18227), (154, 16570), (220, 11599), (308, 8285), (385, 6628), (770, 3314), (1540, 1657)]