78899440

素因数分解:

$2^4\times 5^1\times {\mathrm{541}}^1\times {\mathrm{1823}}^1$

素因数の和:2377

約数の個数: 40

約数和(自身を含む): 183881088

約数和(自身を除く): 104981648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 541, 1082, 1823, 2164, 2705, 3646, 4328, 5410, 7292, 8656, 9115, 10820, 14584, 18230, 21640, 29168, 36460, 43280, 72920, 145840, 986243, 1972486, 3944972, 4931215, 7889944, 9862430, 15779888, 19724860, 39449720, 78899440]

約数ペア:

[(1, 78899440), (2, 39449720), (4, 19724860), (5, 15779888), (8, 9862430), (10, 7889944), (16, 4931215), (20, 3944972), (40, 1972486), (80, 986243), (541, 145840), (1082, 72920), (1823, 43280), (2164, 36460), (2705, 29168), (3646, 21640), (4328, 18230), (5410, 14584), (7292, 10820), (8656, 9115)]