25891840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:427

約数の個数: 88

約数和(自身を含む): 67059720

約数和(自身を除く): 41167880

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 389, 416, 512, 520, 640, 778, 832, 1024, 1040, 1280, 1556, 1664, 1945, 2080, 2560, 3112, 3328, 3890, 4160, 5057, 5120, 6224, 6656, 7780, 8320, 10114, 12448, 13312, 15560, 16640, 20228, 24896, 25285, 31120, 33280, 40456, 49792, 50570, 62240, 66560, 80912, 99584, 101140, 124480, 161824, 199168, 202280, 248960, 323648, 398336, 404560, 497920, 647296, 809120, 995840, 1294592, 1618240, 1991680, 2589184, 3236480, 5178368, 6472960, 12945920, 25891840]

約数ペア:

[(1, 25891840), (2, 12945920), (4, 6472960), (5, 5178368), (8, 3236480), (10, 2589184), (13, 1991680), (16, 1618240), (20, 1294592), (26, 995840), (32, 809120), (40, 647296), (52, 497920), (64, 404560), (65, 398336), (80, 323648), (104, 248960), (128, 202280), (130, 199168), (160, 161824), (208, 124480), (256, 101140), (260, 99584), (320, 80912), (389, 66560), (416, 62240), (512, 50570), (520, 49792), (640, 40456), (778, 33280), (832, 31120), (1024, 25285), (1040, 24896), (1280, 20228), (1556, 16640), (1664, 15560), (1945, 13312), (2080, 12448), (2560, 10114), (3112, 8320), (3328, 7780), (3890, 6656), (4160, 6224), (5057, 5120)]