251511680

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1811}}^1$

素因数の和:1868

約数の個数: 128

約数和(自身を含む): 709724160

約数和(自身を除く): 458212480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 64, 70, 80, 112, 124, 128, 140, 155, 160, 217, 224, 248, 280, 310, 320, 434, 448, 496, 560, 620, 640, 868, 896, 992, 1085, 1120, 1240, 1736, 1811, 1984, 2170, 2240, 2480, 3472, 3622, 3968, 4340, 4480, 4960, 6944, 7244, 8680, 9055, 9920, 12677, 13888, 14488, 17360, 18110, 19840, 25354, 27776, 28976, 34720, 36220, 50708, 56141, 57952, 63385, 69440, 72440, 101416, 112282, 115904, 126770, 138880, 144880, 202832, 224564, 231808, 253540, 280705, 289760, 392987, 405664, 449128, 507080, 561410, 579520, 785974, 811328, 898256, 1014160, 1122820, 1159040, 1571948, 1622656, 1796512, 1964935, 2028320, 2245640, 3143896, 3593024, 3929870, 4056640, 4491280, 6287792, 7186048, 7859740, 8113280, 8982560, 12575584, 15719480, 17965120, 25151168, 31438960, 35930240, 50302336, 62877920, 125755840, 251511680]

約数ペア:

[(1, 251511680), (2, 125755840), (4, 62877920), (5, 50302336), (7, 35930240), (8, 31438960), (10, 25151168), (14, 17965120), (16, 15719480), (20, 12575584), (28, 8982560), (31, 8113280), (32, 7859740), (35, 7186048), (40, 6287792), (56, 4491280), (62, 4056640), (64, 3929870), (70, 3593024), (80, 3143896), (112, 2245640), (124, 2028320), (128, 1964935), (140, 1796512), (155, 1622656), (160, 1571948), (217, 1159040), (224, 1122820), (248, 1014160), (280, 898256), (310, 811328), (320, 785974), (434, 579520), (448, 561410), (496, 507080), (560, 449128), (620, 405664), (640, 392987), (868, 289760), (896, 280705), (992, 253540), (1085, 231808), (1120, 224564), (1240, 202832), (1736, 144880), (1811, 138880), (1984, 126770), (2170, 115904), (2240, 112282), (2480, 101416), (3472, 72440), (3622, 69440), (3968, 63385), (4340, 57952), (4480, 56141), (4960, 50708), (6944, 36220), (7244, 34720), (8680, 28976), (9055, 27776), (9920, 25354), (12677, 19840), (13888, 18110), (14488, 17360)]