12181960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 31651200

約数和(自身を除く): 19469240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 313, 556, 626, 695, 973, 1112, 1252, 1390, 1565, 1946, 2191, 2504, 2780, 3130, 3892, 4382, 4865, 5560, 6260, 7784, 8764, 9730, 10955, 12520, 17528, 19460, 21910, 38920, 43507, 43820, 87014, 87640, 174028, 217535, 304549, 348056, 435070, 609098, 870140, 1218196, 1522745, 1740280, 2436392, 3045490, 6090980, 12181960]

約数ペア:

[(1, 12181960), (2, 6090980), (4, 3045490), (5, 2436392), (7, 1740280), (8, 1522745), (10, 1218196), (14, 870140), (20, 609098), (28, 435070), (35, 348056), (40, 304549), (56, 217535), (70, 174028), (139, 87640), (140, 87014), (278, 43820), (280, 43507), (313, 38920), (556, 21910), (626, 19460), (695, 17528), (973, 12520), (1112, 10955), (1252, 9730), (1390, 8764), (1565, 7784), (1946, 6260), (2191, 5560), (2504, 4865), (2780, 4382), (3130, 3892)]