20265720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{601}}^1$

素因数の和:896

約数の個数: 64

約数和(自身を含む): 61115040

約数和(自身を除く): 40849320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 281, 562, 601, 843, 1124, 1202, 1405, 1686, 1803, 2248, 2404, 2810, 3005, 3372, 3606, 4215, 4808, 5620, 6010, 6744, 7212, 8430, 9015, 11240, 12020, 14424, 16860, 18030, 24040, 33720, 36060, 72120, 168881, 337762, 506643, 675524, 844405, 1013286, 1351048, 1688810, 2026572, 2533215, 3377620, 4053144, 5066430, 6755240, 10132860, 20265720]

約数ペア:

[(1, 20265720), (2, 10132860), (3, 6755240), (4, 5066430), (5, 4053144), (6, 3377620), (8, 2533215), (10, 2026572), (12, 1688810), (15, 1351048), (20, 1013286), (24, 844405), (30, 675524), (40, 506643), (60, 337762), (120, 168881), (281, 72120), (562, 36060), (601, 33720), (843, 24040), (1124, 18030), (1202, 16860), (1405, 14424), (1686, 12020), (1803, 11240), (2248, 9015), (2404, 8430), (2810, 7212), (3005, 6744), (3372, 6010), (3606, 5620), (4215, 4808)]