20453973140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1\times {\mathrm{691}}^1$

素因数の和:1233

約数の個数: 96

約数和(自身を含む): 45242184960

約数和(自身を除く): 24788211820

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 229, 230, 281, 458, 460, 562, 691, 916, 1124, 1145, 1382, 1405, 2290, 2764, 2810, 3455, 4580, 5267, 5620, 6463, 6910, 10534, 12926, 13820, 15893, 21068, 25852, 26335, 31786, 32315, 52670, 63572, 64349, 64630, 79465, 105340, 128698, 129260, 158239, 158930, 194171, 257396, 316478, 317860, 321745, 388342, 632956, 643490, 776684, 791195, 970855, 1286980, 1480027, 1582390, 1941710, 2960054, 3164780, 3639497, 3883420, 4465933, 5920108, 7278994, 7400135, 8931866, 14557988, 14800270, 17863732, 18197485, 22329665, 29600540, 36394970, 44465159, 44659330, 72789940, 88930318, 89318660, 177860636, 222325795, 444651590, 889303180, 1022698657, 2045397314, 4090794628, 5113493285, 10226986570, 20453973140]

約数ペア:

[(1, 20453973140), (2, 10226986570), (4, 5113493285), (5, 4090794628), (10, 2045397314), (20, 1022698657), (23, 889303180), (46, 444651590), (92, 222325795), (115, 177860636), (229, 89318660), (230, 88930318), (281, 72789940), (458, 44659330), (460, 44465159), (562, 36394970), (691, 29600540), (916, 22329665), (1124, 18197485), (1145, 17863732), (1382, 14800270), (1405, 14557988), (2290, 8931866), (2764, 7400135), (2810, 7278994), (3455, 5920108), (4580, 4465933), (5267, 3883420), (5620, 3639497), (6463, 3164780), (6910, 2960054), (10534, 1941710), (12926, 1582390), (13820, 1480027), (15893, 1286980), (21068, 970855), (25852, 791195), (26335, 776684), (31786, 643490), (32315, 632956), (52670, 388342), (63572, 321745), (64349, 317860), (64630, 316478), (79465, 257396), (105340, 194171), (128698, 158930), (129260, 158239)]