19678880

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9461}}^1$

素因数の和:9489

約数の個数: 48

約数和(自身を含む): 50072904

約数和(自身を除く): 30394024

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9461, 18922, 37844, 47305, 75688, 94610, 122993, 151376, 189220, 245986, 302752, 378440, 491972, 614965, 756880, 983944, 1229930, 1513760, 1967888, 2459860, 3935776, 4919720, 9839440, 19678880]

約数ペア:

[(1, 19678880), (2, 9839440), (4, 4919720), (5, 3935776), (8, 2459860), (10, 1967888), (13, 1513760), (16, 1229930), (20, 983944), (26, 756880), (32, 614965), (40, 491972), (52, 378440), (65, 302752), (80, 245986), (104, 189220), (130, 151376), (160, 122993), (208, 94610), (260, 75688), (416, 47305), (520, 37844), (1040, 18922), (2080, 9461)]