20120221209

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{7753}}^1\times {\mathrm{4139}}^1$

素因数の和:11925

約数の個数: 32

約数和(自身を含む): 30817497600

約数和(自身を除く): 10697276391

約数列:

[1, 3, 11, 19, 33, 57, 209, 627, 4139, 7753, 12417, 23259, 45529, 78641, 85283, 136587, 147307, 235923, 255849, 441921, 865051, 1620377, 2595153, 4861131, 32089667, 96269001, 352986337, 609703673, 1058959011, 1829111019, 6706740403, 20120221209]

約数ペア:

[(1, 20120221209), (3, 6706740403), (11, 1829111019), (19, 1058959011), (33, 609703673), (57, 352986337), (209, 96269001), (627, 32089667), (4139, 4861131), (7753, 2595153), (12417, 1620377), (23259, 865051), (45529, 441921), (78641, 255849), (85283, 235923), (136587, 147307)]