664640

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:115

約数の個数: 56

約数和(自身を含む): 1658112

約数和(自身を除く): 993472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 67, 80, 124, 134, 155, 160, 248, 268, 310, 320, 335, 496, 536, 620, 670, 992, 1072, 1240, 1340, 1984, 2077, 2144, 2480, 2680, 4154, 4288, 4960, 5360, 8308, 9920, 10385, 10720, 16616, 20770, 21440, 33232, 41540, 66464, 83080, 132928, 166160, 332320, 664640]

約数ペア:

[(1, 664640), (2, 332320), (4, 166160), (5, 132928), (8, 83080), (10, 66464), (16, 41540), (20, 33232), (31, 21440), (32, 20770), (40, 16616), (62, 10720), (64, 10385), (67, 9920), (80, 8308), (124, 5360), (134, 4960), (155, 4288), (160, 4154), (248, 2680), (268, 2480), (310, 2144), (320, 2077), (335, 1984), (496, 1340), (536, 1240), (620, 1072), (670, 992)]