1994643920

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{60961}}^1$

素因数の和:61383

約数の個数: 40

約数和(自身を含む): 4648962120

約数和(自身を除く): 2654318200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6544, 8180, 16360, 32720, 60961, 121922, 243844, 304805, 487688, 609610, 975376, 1219220, 2438440, 4876880, 24933049, 49866098, 99732196, 124665245, 199464392, 249330490, 398928784, 498660980, 997321960, 1994643920]

約数ペア:

[(1, 1994643920), (2, 997321960), (4, 498660980), (5, 398928784), (8, 249330490), (10, 199464392), (16, 124665245), (20, 99732196), (40, 49866098), (80, 24933049), (409, 4876880), (818, 2438440), (1636, 1219220), (2045, 975376), (3272, 609610), (4090, 487688), (6544, 304805), (8180, 243844), (16360, 121922), (32720, 60961)]