281972666240

素因数分解:

$2^7\times 5^1\times {\mathrm{691}}^1\times {\mathrm{637601}}^1$

素因数の和:638311

約数の個数: 64

約数和(自身を含む): 675067493520

約数和(自身を除く): 393094827280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 691, 1382, 2764, 3455, 5528, 6910, 11056, 13820, 22112, 27640, 44224, 55280, 88448, 110560, 221120, 442240, 637601, 1275202, 2550404, 3188005, 5100808, 6376010, 10201616, 12752020, 20403232, 25504040, 40806464, 51008080, 81612928, 102016160, 204032320, 408064640, 440582291, 881164582, 1762329164, 2202911455, 3524658328, 4405822910, 7049316656, 8811645820, 14098633312, 17623291640, 28197266624, 35246583280, 56394533248, 70493166560, 140986333120, 281972666240]

約数ペア:

[(1, 281972666240), (2, 140986333120), (4, 70493166560), (5, 56394533248), (8, 35246583280), (10, 28197266624), (16, 17623291640), (20, 14098633312), (32, 8811645820), (40, 7049316656), (64, 4405822910), (80, 3524658328), (128, 2202911455), (160, 1762329164), (320, 881164582), (640, 440582291), (691, 408064640), (1382, 204032320), (2764, 102016160), (3455, 81612928), (5528, 51008080), (6910, 40806464), (11056, 25504040), (13820, 20403232), (22112, 12752020), (27640, 10201616), (44224, 6376010), (55280, 5100808), (88448, 3188005), (110560, 2550404), (221120, 1275202), (442240, 637601)]