20645504

素因数分解:

$2^7\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 96

約数和(自身を含む): 47752320

約数和(自身を除く): 27106816

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 43, 44, 62, 64, 86, 88, 121, 124, 128, 172, 176, 242, 248, 341, 344, 352, 473, 484, 496, 682, 688, 704, 946, 968, 992, 1333, 1364, 1376, 1408, 1892, 1936, 1984, 2666, 2728, 2752, 3751, 3784, 3872, 3968, 5203, 5332, 5456, 5504, 7502, 7568, 7744, 10406, 10664, 10912, 14663, 15004, 15136, 15488, 20812, 21328, 21824, 29326, 30008, 30272, 41624, 42656, 43648, 58652, 60016, 60544, 83248, 85312, 117304, 120032, 161293, 166496, 170624, 234608, 240064, 322586, 332992, 469216, 480128, 645172, 665984, 938432, 1290344, 1876864, 2580688, 5161376, 10322752, 20645504]

約数ペア:

[(1, 20645504), (2, 10322752), (4, 5161376), (8, 2580688), (11, 1876864), (16, 1290344), (22, 938432), (31, 665984), (32, 645172), (43, 480128), (44, 469216), (62, 332992), (64, 322586), (86, 240064), (88, 234608), (121, 170624), (124, 166496), (128, 161293), (172, 120032), (176, 117304), (242, 85312), (248, 83248), (341, 60544), (344, 60016), (352, 58652), (473, 43648), (484, 42656), (496, 41624), (682, 30272), (688, 30008), (704, 29326), (946, 21824), (968, 21328), (992, 20812), (1333, 15488), (1364, 15136), (1376, 15004), (1408, 14663), (1892, 10912), (1936, 10664), (1984, 10406), (2666, 7744), (2728, 7568), (2752, 7502), (3751, 5504), (3784, 5456), (3872, 5332), (3968, 5203)]