20973820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4049}}^1$

素因数の和:4102

約数の個数: 48

約数和(自身を含む): 51710400

約数和(自身を除く): 30736580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 4049, 5180, 8098, 16196, 20245, 28343, 40490, 56686, 80980, 113372, 141715, 149813, 283430, 299626, 566860, 599252, 749065, 1048691, 1498130, 2097382, 2996260, 4194764, 5243455, 10486910, 20973820]

約数ペア:

[(1, 20973820), (2, 10486910), (4, 5243455), (5, 4194764), (7, 2996260), (10, 2097382), (14, 1498130), (20, 1048691), (28, 749065), (35, 599252), (37, 566860), (70, 299626), (74, 283430), (140, 149813), (148, 141715), (185, 113372), (259, 80980), (370, 56686), (518, 40490), (740, 28343), (1036, 20245), (1295, 16196), (2590, 8098), (4049, 5180)]