258918400

素因数分解:

$2^{11}\times 5^2\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:434

約数の個数: 144

約数和(自身を含む): 693119700

約数和(自身を除く): 434201300

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 128, 130, 160, 200, 208, 256, 260, 320, 325, 389, 400, 416, 512, 520, 640, 650, 778, 800, 832, 1024, 1040, 1280, 1300, 1556, 1600, 1664, 1945, 2048, 2080, 2560, 2600, 3112, 3200, 3328, 3890, 4160, 5057, 5120, 5200, 6224, 6400, 6656, 7780, 8320, 9725, 10114, 10240, 10400, 12448, 12800, 13312, 15560, 16640, 19450, 20228, 20800, 24896, 25285, 25600, 26624, 31120, 33280, 38900, 40456, 41600, 49792, 50570, 51200, 62240, 66560, 77800, 80912, 83200, 99584, 101140, 124480, 126425, 133120, 155600, 161824, 166400, 199168, 202280, 248960, 252850, 311200, 323648, 332800, 398336, 404560, 497920, 505700, 622400, 647296, 665600, 796672, 809120, 995840, 1011400, 1244800, 1294592, 1618240, 1991680, 2022800, 2489600, 2589184, 3236480, 3983360, 4045600, 4979200, 5178368, 6472960, 8091200, 9958400, 10356736, 12945920, 16182400, 19916800, 25891840, 32364800, 51783680, 64729600, 129459200, 258918400]

約数ペア:

[(1, 258918400), (2, 129459200), (4, 64729600), (5, 51783680), (8, 32364800), (10, 25891840), (13, 19916800), (16, 16182400), (20, 12945920), (25, 10356736), (26, 9958400), (32, 8091200), (40, 6472960), (50, 5178368), (52, 4979200), (64, 4045600), (65, 3983360), (80, 3236480), (100, 2589184), (104, 2489600), (128, 2022800), (130, 1991680), (160, 1618240), (200, 1294592), (208, 1244800), (256, 1011400), (260, 995840), (320, 809120), (325, 796672), (389, 665600), (400, 647296), (416, 622400), (512, 505700), (520, 497920), (640, 404560), (650, 398336), (778, 332800), (800, 323648), (832, 311200), (1024, 252850), (1040, 248960), (1280, 202280), (1300, 199168), (1556, 166400), (1600, 161824), (1664, 155600), (1945, 133120), (2048, 126425), (2080, 124480), (2560, 101140), (2600, 99584), (3112, 83200), (3200, 80912), (3328, 77800), (3890, 66560), (4160, 62240), (5057, 51200), (5120, 50570), (5200, 49792), (6224, 41600), (6400, 40456), (6656, 38900), (7780, 33280), (8320, 31120), (9725, 26624), (10114, 25600), (10240, 25285), (10400, 24896), (12448, 20800), (12800, 20228), (13312, 19450), (15560, 16640)]