138304640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6971}}^1$

素因数の和:7021

約数の個数: 64

約数和(自身を含む): 341349120

約数和(自身を除く): 203044480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 6971, 9920, 13942, 19840, 27884, 34855, 55768, 69710, 111536, 139420, 216101, 223072, 278840, 432202, 446144, 557680, 864404, 892288, 1080505, 1115360, 1728808, 2161010, 2230720, 3457616, 4322020, 4461440, 6915232, 8644040, 13830464, 17288080, 27660928, 34576160, 69152320, 138304640]

約数ペア:

[(1, 138304640), (2, 69152320), (4, 34576160), (5, 27660928), (8, 17288080), (10, 13830464), (16, 8644040), (20, 6915232), (31, 4461440), (32, 4322020), (40, 3457616), (62, 2230720), (64, 2161010), (80, 1728808), (124, 1115360), (128, 1080505), (155, 892288), (160, 864404), (248, 557680), (310, 446144), (320, 432202), (496, 278840), (620, 223072), (640, 216101), (992, 139420), (1240, 111536), (1984, 69710), (2480, 55768), (3968, 34855), (4960, 27884), (6971, 19840), (9920, 13942)]