20544520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{163}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 48885120

約数和(自身を除く): 28340600

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 137, 163, 184, 230, 274, 326, 460, 548, 652, 685, 815, 920, 1096, 1304, 1370, 1630, 2740, 3151, 3260, 3749, 5480, 6302, 6520, 7498, 12604, 14996, 15755, 18745, 22331, 25208, 29992, 31510, 37490, 44662, 63020, 74980, 89324, 111655, 126040, 149960, 178648, 223310, 446620, 513613, 893240, 1027226, 2054452, 2568065, 4108904, 5136130, 10272260, 20544520]

約数ペア:

[(1, 20544520), (2, 10272260), (4, 5136130), (5, 4108904), (8, 2568065), (10, 2054452), (20, 1027226), (23, 893240), (40, 513613), (46, 446620), (92, 223310), (115, 178648), (137, 149960), (163, 126040), (184, 111655), (230, 89324), (274, 74980), (326, 63020), (460, 44662), (548, 37490), (652, 31510), (685, 29992), (815, 25208), (920, 22331), (1096, 18745), (1304, 15755), (1370, 14996), (1630, 12604), (2740, 7498), (3151, 6520), (3260, 6302), (3749, 5480)]