256218144819

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{305411}}^1$

素因数の和:305880

約数の個数: 48

約数和(自身を含む): 428945045760

約数和(自身を除く): 172726900941

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 439, 637, 1317, 1911, 3073, 5707, 9219, 17121, 21511, 39949, 64533, 119847, 279643, 305411, 838929, 916233, 2137877, 3970343, 6413631, 11911029, 14965139, 27792401, 44895417, 83377203, 134075429, 194546807, 402226287, 583640421, 938528003, 1742980577, 2815584009, 5228941731, 6569696021, 12200864039, 19709088063, 36602592117, 85406048273, 256218144819]

約数ペア:

[(1, 256218144819), (3, 85406048273), (7, 36602592117), (13, 19709088063), (21, 12200864039), (39, 6569696021), (49, 5228941731), (91, 2815584009), (147, 1742980577), (273, 938528003), (439, 583640421), (637, 402226287), (1317, 194546807), (1911, 134075429), (3073, 83377203), (5707, 44895417), (9219, 27792401), (17121, 14965139), (21511, 11911029), (39949, 6413631), (64533, 3970343), (119847, 2137877), (279643, 916233), (305411, 838929)]