77704240

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15923}}^1$

素因数の和:15997

約数の個数: 40

約数和(自身を含む): 183635568

約数和(自身を除く): 105931328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 15923, 31846, 63692, 79615, 127384, 159230, 254768, 318460, 636920, 971303, 1273840, 1942606, 3885212, 4856515, 7770424, 9713030, 15540848, 19426060, 38852120, 77704240]

約数ペア:

[(1, 77704240), (2, 38852120), (4, 19426060), (5, 15540848), (8, 9713030), (10, 7770424), (16, 4856515), (20, 3885212), (40, 1942606), (61, 1273840), (80, 971303), (122, 636920), (244, 318460), (305, 254768), (488, 159230), (610, 127384), (976, 79615), (1220, 63692), (2440, 31846), (4880, 15923)]