20896890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{659}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 57784320

約数和(自身を除く): 36887430

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 151, 210, 302, 453, 659, 755, 906, 1057, 1318, 1510, 1977, 2114, 2265, 3171, 3295, 3954, 4530, 4613, 5285, 6342, 6590, 9226, 9885, 10570, 13839, 15855, 19770, 23065, 27678, 31710, 46130, 69195, 99509, 138390, 199018, 298527, 497545, 597054, 696563, 995090, 1393126, 1492635, 2089689, 2985270, 3482815, 4179378, 6965630, 10448445, 20896890]

約数ペア:

[(1, 20896890), (2, 10448445), (3, 6965630), (5, 4179378), (6, 3482815), (7, 2985270), (10, 2089689), (14, 1492635), (15, 1393126), (21, 995090), (30, 696563), (35, 597054), (42, 497545), (70, 298527), (105, 199018), (151, 138390), (210, 99509), (302, 69195), (453, 46130), (659, 31710), (755, 27678), (906, 23065), (1057, 19770), (1318, 15855), (1510, 13839), (1977, 10570), (2114, 9885), (2265, 9226), (3171, 6590), (3295, 6342), (3954, 5285), (4530, 4613)]