21161140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1$

素因数の和:198

約数の個数: 144

約数和(自身を含む): 61133184

約数和(自身を除く): 39972044

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 130, 140, 143, 151, 154, 182, 196, 220, 245, 260, 286, 302, 308, 364, 385, 455, 490, 539, 572, 604, 637, 715, 755, 770, 910, 980, 1001, 1057, 1078, 1274, 1430, 1510, 1540, 1661, 1820, 1963, 2002, 2114, 2156, 2548, 2695, 2860, 3020, 3185, 3322, 3926, 4004, 4228, 5005, 5285, 5390, 6370, 6644, 7007, 7399, 7852, 8305, 9815, 10010, 10570, 10780, 11627, 12740, 13741, 14014, 14798, 16610, 19630, 20020, 21140, 21593, 23254, 27482, 28028, 29596, 33220, 35035, 36995, 39260, 43186, 46508, 54964, 58135, 68705, 70070, 73990, 81389, 86372, 96187, 107965, 116270, 137410, 140140, 147980, 151151, 162778, 192374, 215930, 232540, 274820, 302302, 325556, 384748, 406945, 431860, 480935, 604604, 755755, 813890, 961870, 1058057, 1511510, 1627780, 1923740, 2116114, 3023020, 4232228, 5290285, 10580570, 21161140]

約数ペア:

[(1, 21161140), (2, 10580570), (4, 5290285), (5, 4232228), (7, 3023020), (10, 2116114), (11, 1923740), (13, 1627780), (14, 1511510), (20, 1058057), (22, 961870), (26, 813890), (28, 755755), (35, 604604), (44, 480935), (49, 431860), (52, 406945), (55, 384748), (65, 325556), (70, 302302), (77, 274820), (91, 232540), (98, 215930), (110, 192374), (130, 162778), (140, 151151), (143, 147980), (151, 140140), (154, 137410), (182, 116270), (196, 107965), (220, 96187), (245, 86372), (260, 81389), (286, 73990), (302, 70070), (308, 68705), (364, 58135), (385, 54964), (455, 46508), (490, 43186), (539, 39260), (572, 36995), (604, 35035), (637, 33220), (715, 29596), (755, 28028), (770, 27482), (910, 23254), (980, 21593), (1001, 21140), (1057, 20020), (1078, 19630), (1274, 16610), (1430, 14798), (1510, 14014), (1540, 13741), (1661, 12740), (1820, 11627), (1963, 10780), (2002, 10570), (2114, 10010), (2156, 9815), (2548, 8305), (2695, 7852), (2860, 7399), (3020, 7007), (3185, 6644), (3322, 6370), (3926, 5390), (4004, 5285), (4228, 5005)]