51328525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 72316800

約数和(自身を除く): 20988275

約数列:

[1, 5, 17, 23, 25, 59, 85, 89, 115, 295, 391, 425, 445, 575, 1003, 1357, 1475, 1513, 1955, 2047, 2225, 5015, 5251, 6785, 7565, 9775, 10235, 23069, 25075, 26255, 33925, 34799, 37825, 51175, 89267, 115345, 120773, 131275, 173995, 446335, 576725, 603865, 869975, 2053141, 2231675, 3019325, 10265705, 51328525]

約数ペア:

[(1, 51328525), (5, 10265705), (17, 3019325), (23, 2231675), (25, 2053141), (59, 869975), (85, 603865), (89, 576725), (115, 446335), (295, 173995), (391, 131275), (425, 120773), (445, 115345), (575, 89267), (1003, 51175), (1357, 37825), (1475, 34799), (1513, 33925), (1955, 26255), (2047, 25075), (2225, 23069), (5015, 10235), (5251, 9775), (6785, 7565)]