257682256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{65203}}^1$

素因数の和:65243

約数の個数: 40

約数和(自身を含む): 565970720

約数和(自身を除く): 308288464

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 65203, 130406, 260812, 521624, 847639, 1043248, 1238857, 1695278, 2477714, 3390556, 4955428, 6781112, 9910856, 13562224, 16105141, 19821712, 32210282, 64420564, 128841128, 257682256]

約数ペア:

[(1, 257682256), (2, 128841128), (4, 64420564), (8, 32210282), (13, 19821712), (16, 16105141), (19, 13562224), (26, 9910856), (38, 6781112), (52, 4955428), (76, 3390556), (104, 2477714), (152, 1695278), (208, 1238857), (247, 1043248), (304, 847639), (494, 521624), (988, 260812), (1976, 130406), (3952, 65203)]