20909574

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:330

約数の個数: 72

約数和(自身を含む): 53387568

約数和(自身を除く): 32477994

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 151, 157, 294, 302, 314, 441, 453, 471, 882, 906, 942, 1057, 1099, 1359, 1413, 2114, 2198, 2718, 2826, 3171, 3297, 6342, 6594, 7399, 7693, 9513, 9891, 14798, 15386, 19026, 19782, 22197, 23079, 23707, 44394, 46158, 47414, 66591, 69237, 71121, 133182, 138474, 142242, 165949, 213363, 331898, 426726, 497847, 995694, 1161643, 1493541, 2323286, 2987082, 3484929, 6969858, 10454787, 20909574]

約数ペア:

[(1, 20909574), (2, 10454787), (3, 6969858), (6, 3484929), (7, 2987082), (9, 2323286), (14, 1493541), (18, 1161643), (21, 995694), (42, 497847), (49, 426726), (63, 331898), (98, 213363), (126, 165949), (147, 142242), (151, 138474), (157, 133182), (294, 71121), (302, 69237), (314, 66591), (441, 47414), (453, 46158), (471, 44394), (882, 23707), (906, 23079), (942, 22197), (1057, 19782), (1099, 19026), (1359, 15386), (1413, 14798), (2114, 9891), (2198, 9513), (2718, 7693), (2826, 7399), (3171, 6594), (3297, 6342)]