21080590947

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1423}}^1\times {\mathrm{2389}}^1$

素因数の和:3884

約数の個数: 48

約数和(自身を含む): 33448222080

約数和(自身を除く): 12367631133

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 1423, 2067, 2389, 4269, 6201, 7167, 12807, 18499, 21501, 31057, 55497, 75419, 93171, 126617, 166491, 226257, 279513, 379851, 678771, 980447, 1139553, 1646021, 2941341, 3399547, 4938063, 8824023, 10198641, 14814189, 30595923, 44194111, 132582333, 180175991, 397746999, 540527973, 1621583919, 2342287883, 7026863649, 21080590947]

約数ペア:

[(1, 21080590947), (3, 7026863649), (9, 2342287883), (13, 1621583919), (39, 540527973), (53, 397746999), (117, 180175991), (159, 132582333), (477, 44194111), (689, 30595923), (1423, 14814189), (2067, 10198641), (2389, 8824023), (4269, 4938063), (6201, 3399547), (7167, 2941341), (12807, 1646021), (18499, 1139553), (21501, 980447), (31057, 678771), (55497, 379851), (75419, 279513), (93171, 226257), (126617, 166491)]