217257278

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:585

約数の個数: 48

約数和(自身を含む): 392137200

約数和(自身を除く): 174879922

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 139, 278, 287, 389, 574, 778, 973, 1946, 2009, 2723, 4018, 5446, 5699, 6811, 11398, 13622, 15949, 19061, 31898, 38122, 39893, 54071, 79786, 108142, 111643, 223286, 279251, 378497, 558502, 756994, 781501, 1563002, 2216911, 2649479, 4433822, 5298958, 15518377, 31036754, 108628639, 217257278]

約数ペア:

[(1, 217257278), (2, 108628639), (7, 31036754), (14, 15518377), (41, 5298958), (49, 4433822), (82, 2649479), (98, 2216911), (139, 1563002), (278, 781501), (287, 756994), (389, 558502), (574, 378497), (778, 279251), (973, 223286), (1946, 111643), (2009, 108142), (2723, 79786), (4018, 54071), (5446, 39893), (5699, 38122), (6811, 31898), (11398, 19061), (13622, 15949)]