20508488

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{197}}^1$

素因数の和:247

約数の個数: 96

約数和(自身を含む): 52176960

約数和(自身を除く): 31668472

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 22, 26, 28, 44, 52, 56, 77, 88, 91, 104, 143, 154, 169, 182, 197, 286, 308, 338, 364, 394, 572, 616, 676, 728, 788, 1001, 1144, 1183, 1352, 1379, 1576, 1859, 2002, 2167, 2366, 2561, 2758, 3718, 4004, 4334, 4732, 5122, 5516, 7436, 8008, 8668, 9464, 10244, 11032, 13013, 14872, 15169, 17336, 17927, 20488, 26026, 28171, 30338, 33293, 35854, 52052, 56342, 60676, 66586, 71708, 104104, 112684, 121352, 133172, 143416, 197197, 225368, 233051, 266344, 366223, 394394, 466102, 732446, 788788, 932204, 1464892, 1577576, 1864408, 2563561, 2929784, 5127122, 10254244, 20508488]

約数ペア:

[(1, 20508488), (2, 10254244), (4, 5127122), (7, 2929784), (8, 2563561), (11, 1864408), (13, 1577576), (14, 1464892), (22, 932204), (26, 788788), (28, 732446), (44, 466102), (52, 394394), (56, 366223), (77, 266344), (88, 233051), (91, 225368), (104, 197197), (143, 143416), (154, 133172), (169, 121352), (182, 112684), (197, 104104), (286, 71708), (308, 66586), (338, 60676), (364, 56342), (394, 52052), (572, 35854), (616, 33293), (676, 30338), (728, 28171), (788, 26026), (1001, 20488), (1144, 17927), (1183, 17336), (1352, 15169), (1379, 14872), (1576, 13013), (1859, 11032), (2002, 10244), (2167, 9464), (2366, 8668), (2561, 8008), (2758, 7436), (3718, 5516), (4004, 5122), (4334, 4732)]