128609920

素因数分解:

$2^7\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1951}}^1$

素因数の和:2073

約数の個数: 64

約数和(自身を含む): 310602240

約数和(自身を除く): 181992320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 103, 128, 160, 206, 320, 412, 515, 640, 824, 1030, 1648, 1951, 2060, 3296, 3902, 4120, 6592, 7804, 8240, 9755, 13184, 15608, 16480, 19510, 31216, 32960, 39020, 62432, 65920, 78040, 124864, 156080, 200953, 249728, 312160, 401906, 624320, 803812, 1004765, 1248640, 1607624, 2009530, 3215248, 4019060, 6430496, 8038120, 12860992, 16076240, 25721984, 32152480, 64304960, 128609920]

約数ペア:

[(1, 128609920), (2, 64304960), (4, 32152480), (5, 25721984), (8, 16076240), (10, 12860992), (16, 8038120), (20, 6430496), (32, 4019060), (40, 3215248), (64, 2009530), (80, 1607624), (103, 1248640), (128, 1004765), (160, 803812), (206, 624320), (320, 401906), (412, 312160), (515, 249728), (640, 200953), (824, 156080), (1030, 124864), (1648, 78040), (1951, 65920), (2060, 62432), (3296, 39020), (3902, 32960), (4120, 31216), (6592, 19510), (7804, 16480), (8240, 15608), (9755, 13184)]