138878740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{991}}^1$

素因数の和:1038

約数の個数: 144

約数和(自身を含む): 398974464

約数和(自身を除く): 260095724

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, 991, 1001, 1078, 1274, 1430, 1540, 1820, 1982, 2002, 2156, 2548, 2695, 2860, 3185, 3964, 4004, 4955, 5005, 5390, 6370, 6937, 7007, 9910, 10010, 10780, 10901, 12740, 12883, 13874, 14014, 19820, 20020, 21802, 25766, 27748, 28028, 34685, 35035, 43604, 48559, 51532, 54505, 64415, 69370, 70070, 76307, 90181, 97118, 109010, 128830, 138740, 140140, 141713, 152614, 180362, 194236, 218020, 242795, 257660, 283426, 305228, 360724, 381535, 450905, 485590, 534149, 566852, 631267, 708565, 763070, 901810, 971180, 991991, 1068298, 1262534, 1417130, 1526140, 1803620, 1983982, 2136596, 2525068, 2670745, 2834260, 3156335, 3967964, 4959955, 5341490, 6312670, 6943937, 9919910, 10682980, 12625340, 13887874, 19839820, 27775748, 34719685, 69439370, 138878740]

約数ペア:

[(1, 138878740), (2, 69439370), (4, 34719685), (5, 27775748), (7, 19839820), (10, 13887874), (11, 12625340), (13, 10682980), (14, 9919910), (20, 6943937), (22, 6312670), (26, 5341490), (28, 4959955), (35, 3967964), (44, 3156335), (49, 2834260), (52, 2670745), (55, 2525068), (65, 2136596), (70, 1983982), (77, 1803620), (91, 1526140), (98, 1417130), (110, 1262534), (130, 1068298), (140, 991991), (143, 971180), (154, 901810), (182, 763070), (196, 708565), (220, 631267), (245, 566852), (260, 534149), (286, 485590), (308, 450905), (364, 381535), (385, 360724), (455, 305228), (490, 283426), (539, 257660), (572, 242795), (637, 218020), (715, 194236), (770, 180362), (910, 152614), (980, 141713), (991, 140140), (1001, 138740), (1078, 128830), (1274, 109010), (1430, 97118), (1540, 90181), (1820, 76307), (1982, 70070), (2002, 69370), (2156, 64415), (2548, 54505), (2695, 51532), (2860, 48559), (3185, 43604), (3964, 35035), (4004, 34685), (4955, 28028), (5005, 27748), (5390, 25766), (6370, 21802), (6937, 20020), (7007, 19820), (9910, 14014), (10010, 13874), (10780, 12883), (10901, 12740)]