20889440

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1$

素因数の和:133

約数の個数: 144

約数和(自身を含む): 59122224

約数和(自身を除く): 38232784

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 83, 88, 104, 110, 121, 130, 143, 160, 166, 176, 208, 220, 242, 260, 286, 332, 352, 415, 416, 440, 484, 520, 572, 605, 664, 715, 830, 880, 913, 968, 1040, 1079, 1144, 1210, 1328, 1430, 1573, 1660, 1760, 1826, 1936, 2080, 2158, 2288, 2420, 2656, 2860, 3146, 3320, 3652, 3872, 4316, 4565, 4576, 4840, 5395, 5720, 6292, 6640, 7304, 7865, 8632, 9130, 9680, 10043, 10790, 11440, 11869, 12584, 13280, 14608, 15730, 17264, 18260, 19360, 20086, 21580, 22880, 23738, 25168, 29216, 31460, 34528, 36520, 40172, 43160, 47476, 50215, 50336, 59345, 62920, 73040, 80344, 86320, 94952, 100430, 118690, 125840, 130559, 146080, 160688, 172640, 189904, 200860, 237380, 251680, 261118, 321376, 379808, 401720, 474760, 522236, 652795, 803440, 949520, 1044472, 1305590, 1606880, 1899040, 2088944, 2611180, 4177888, 5222360, 10444720, 20889440]

約数ペア:

[(1, 20889440), (2, 10444720), (4, 5222360), (5, 4177888), (8, 2611180), (10, 2088944), (11, 1899040), (13, 1606880), (16, 1305590), (20, 1044472), (22, 949520), (26, 803440), (32, 652795), (40, 522236), (44, 474760), (52, 401720), (55, 379808), (65, 321376), (80, 261118), (83, 251680), (88, 237380), (104, 200860), (110, 189904), (121, 172640), (130, 160688), (143, 146080), (160, 130559), (166, 125840), (176, 118690), (208, 100430), (220, 94952), (242, 86320), (260, 80344), (286, 73040), (332, 62920), (352, 59345), (415, 50336), (416, 50215), (440, 47476), (484, 43160), (520, 40172), (572, 36520), (605, 34528), (664, 31460), (715, 29216), (830, 25168), (880, 23738), (913, 22880), (968, 21580), (1040, 20086), (1079, 19360), (1144, 18260), (1210, 17264), (1328, 15730), (1430, 14608), (1573, 13280), (1660, 12584), (1760, 11869), (1826, 11440), (1936, 10790), (2080, 10043), (2158, 9680), (2288, 9130), (2420, 8632), (2656, 7865), (2860, 7304), (3146, 6640), (3320, 6292), (3652, 5720), (3872, 5395), (4316, 4840), (4565, 4576)]