20272840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4259}}^1$

素因数の和:4294

約数の個数: 64

約数和(自身を含む): 55209600

約数和(自身を除く): 34936760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4259, 4760, 8518, 17036, 21295, 29813, 34072, 42590, 59626, 72403, 85180, 119252, 144806, 149065, 170360, 238504, 289612, 298130, 362015, 506821, 579224, 596260, 724030, 1013642, 1192520, 1448060, 2027284, 2534105, 2896120, 4054568, 5068210, 10136420, 20272840]

約数ペア:

[(1, 20272840), (2, 10136420), (4, 5068210), (5, 4054568), (7, 2896120), (8, 2534105), (10, 2027284), (14, 1448060), (17, 1192520), (20, 1013642), (28, 724030), (34, 596260), (35, 579224), (40, 506821), (56, 362015), (68, 298130), (70, 289612), (85, 238504), (119, 170360), (136, 149065), (140, 144806), (170, 119252), (238, 85180), (280, 72403), (340, 59626), (476, 42590), (595, 34072), (680, 29813), (952, 21295), (1190, 17036), (2380, 8518), (4259, 4760)]