18918180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{463}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 57762432

約数和(自身を除く): 38844252

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 227, 454, 463, 681, 908, 926, 1135, 1362, 1389, 1852, 2043, 2270, 2315, 2724, 2778, 3405, 4086, 4167, 4540, 4630, 5556, 6810, 6945, 8172, 8334, 9260, 10215, 13620, 13890, 16668, 20430, 20835, 27780, 40860, 41670, 83340, 105101, 210202, 315303, 420404, 525505, 630606, 945909, 1051010, 1261212, 1576515, 1891818, 2102020, 3153030, 3783636, 4729545, 6306060, 9459090, 18918180]

約数ペア:

[(1, 18918180), (2, 9459090), (3, 6306060), (4, 4729545), (5, 3783636), (6, 3153030), (9, 2102020), (10, 1891818), (12, 1576515), (15, 1261212), (18, 1051010), (20, 945909), (30, 630606), (36, 525505), (45, 420404), (60, 315303), (90, 210202), (180, 105101), (227, 83340), (454, 41670), (463, 40860), (681, 27780), (908, 20835), (926, 20430), (1135, 16668), (1362, 13890), (1389, 13620), (1852, 10215), (2043, 9260), (2270, 8334), (2315, 8172), (2724, 6945), (2778, 6810), (3405, 5556), (4086, 4630), (4167, 4540)]