68994520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1031}}^1$

素因数の和:1288

約数の個数: 64

約数和(自身を含む): 178329600

約数和(自身を除く): 109335080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 239, 280, 478, 956, 1031, 1195, 1673, 1912, 2062, 2390, 3346, 4124, 4780, 5155, 6692, 7217, 8248, 8365, 9560, 10310, 13384, 14434, 16730, 20620, 28868, 33460, 36085, 41240, 57736, 66920, 72170, 144340, 246409, 288680, 492818, 985636, 1232045, 1724863, 1971272, 2464090, 3449726, 4928180, 6899452, 8624315, 9856360, 13798904, 17248630, 34497260, 68994520]

約数ペア:

[(1, 68994520), (2, 34497260), (4, 17248630), (5, 13798904), (7, 9856360), (8, 8624315), (10, 6899452), (14, 4928180), (20, 3449726), (28, 2464090), (35, 1971272), (40, 1724863), (56, 1232045), (70, 985636), (140, 492818), (239, 288680), (280, 246409), (478, 144340), (956, 72170), (1031, 66920), (1195, 57736), (1673, 41240), (1912, 36085), (2062, 33460), (2390, 28868), (3346, 20620), (4124, 16730), (4780, 14434), (5155, 13384), (6692, 10310), (7217, 9560), (8248, 8365)]