20178441328

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{311}}^1\times {\mathrm{1123}}^1$

素因数の和:1622

約数の個数: 80

約数和(自身を含む): 41224075776

約数和(自身を除く): 21045634448

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 157, 184, 311, 314, 368, 622, 628, 1123, 1244, 1256, 2246, 2488, 2512, 3611, 4492, 4976, 7153, 7222, 8984, 14306, 14444, 17968, 25829, 28612, 28888, 48827, 51658, 57224, 57776, 97654, 103316, 114448, 176311, 195308, 206632, 349253, 352622, 390616, 413264, 698506, 705244, 781232, 1123021, 1397012, 1410488, 2246042, 2794024, 2820976, 4055153, 4492084, 5588048, 8032819, 8110306, 8984168, 16065638, 16220612, 17968336, 32131276, 32441224, 54832721, 64262552, 64882448, 109665442, 128525104, 219330884, 438661768, 877323536, 1261152583, 2522305166, 5044610332, 10089220664, 20178441328]

約数ペア:

[(1, 20178441328), (2, 10089220664), (4, 5044610332), (8, 2522305166), (16, 1261152583), (23, 877323536), (46, 438661768), (92, 219330884), (157, 128525104), (184, 109665442), (311, 64882448), (314, 64262552), (368, 54832721), (622, 32441224), (628, 32131276), (1123, 17968336), (1244, 16220612), (1256, 16065638), (2246, 8984168), (2488, 8110306), (2512, 8032819), (3611, 5588048), (4492, 4492084), (4976, 4055153), (7153, 2820976), (7222, 2794024), (8984, 2246042), (14306, 1410488), (14444, 1397012), (17968, 1123021), (25829, 781232), (28612, 705244), (28888, 698506), (48827, 413264), (51658, 390616), (57224, 352622), (57776, 349253), (97654, 206632), (103316, 195308), (114448, 176311)]