281821540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2011}}^1$

素因数の和:2058

約数の個数: 144

約数和(自身を含む): 809210304

約数和(自身を除く): 527388764

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, 154, 182, 196, 220, 245, 260, 286, 308, 364, 385, 455, 490, 539, 572, 637, 715, 770, 910, 980, 1001, 1078, 1274, 1430, 1540, 1820, 2002, 2011, 2156, 2548, 2695, 2860, 3185, 4004, 4022, 5005, 5390, 6370, 7007, 8044, 10010, 10055, 10780, 12740, 14014, 14077, 20020, 20110, 22121, 26143, 28028, 28154, 35035, 40220, 44242, 52286, 56308, 70070, 70385, 88484, 98539, 104572, 110605, 130715, 140140, 140770, 154847, 183001, 197078, 221210, 261430, 281540, 287573, 309694, 366002, 394156, 442420, 492695, 522860, 575146, 619388, 732004, 774235, 915005, 985390, 1083929, 1150292, 1281007, 1437865, 1548470, 1830010, 1970780, 2013011, 2167858, 2562014, 2875730, 3096940, 3660020, 4026022, 4335716, 5124028, 5419645, 5751460, 6405035, 8052044, 10065055, 10839290, 12810070, 14091077, 20130110, 21678580, 25620140, 28182154, 40260220, 56364308, 70455385, 140910770, 281821540]

約数ペア:

[(1, 281821540), (2, 140910770), (4, 70455385), (5, 56364308), (7, 40260220), (10, 28182154), (11, 25620140), (13, 21678580), (14, 20130110), (20, 14091077), (22, 12810070), (26, 10839290), (28, 10065055), (35, 8052044), (44, 6405035), (49, 5751460), (52, 5419645), (55, 5124028), (65, 4335716), (70, 4026022), (77, 3660020), (91, 3096940), (98, 2875730), (110, 2562014), (130, 2167858), (140, 2013011), (143, 1970780), (154, 1830010), (182, 1548470), (196, 1437865), (220, 1281007), (245, 1150292), (260, 1083929), (286, 985390), (308, 915005), (364, 774235), (385, 732004), (455, 619388), (490, 575146), (539, 522860), (572, 492695), (637, 442420), (715, 394156), (770, 366002), (910, 309694), (980, 287573), (1001, 281540), (1078, 261430), (1274, 221210), (1430, 197078), (1540, 183001), (1820, 154847), (2002, 140770), (2011, 140140), (2156, 130715), (2548, 110605), (2695, 104572), (2860, 98539), (3185, 88484), (4004, 70385), (4022, 70070), (5005, 56308), (5390, 52286), (6370, 44242), (7007, 40220), (8044, 35035), (10010, 28154), (10055, 28028), (10780, 26143), (12740, 22121), (14014, 20110), (14077, 20020)]