247841720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{21589}}^1$

素因数の和:21648

約数の個数: 64

約数和(自身を含む): 652881600

約数和(自身を除く): 405039880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 56, 70, 82, 140, 164, 205, 280, 287, 328, 410, 574, 820, 1148, 1435, 1640, 2296, 2870, 5740, 11480, 21589, 43178, 86356, 107945, 151123, 172712, 215890, 302246, 431780, 604492, 755615, 863560, 885149, 1208984, 1511230, 1770298, 3022460, 3540596, 4425745, 6044920, 6196043, 7081192, 8851490, 12392086, 17702980, 24784172, 30980215, 35405960, 49568344, 61960430, 123920860, 247841720]

約数ペア:

[(1, 247841720), (2, 123920860), (4, 61960430), (5, 49568344), (7, 35405960), (8, 30980215), (10, 24784172), (14, 17702980), (20, 12392086), (28, 8851490), (35, 7081192), (40, 6196043), (41, 6044920), (56, 4425745), (70, 3540596), (82, 3022460), (140, 1770298), (164, 1511230), (205, 1208984), (280, 885149), (287, 863560), (328, 755615), (410, 604492), (574, 431780), (820, 302246), (1148, 215890), (1435, 172712), (1640, 151123), (2296, 107945), (2870, 86356), (5740, 43178), (11480, 21589)]