20692455

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{599}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 39398400

約数和(自身を除く): 18705945

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 49, 105, 141, 147, 235, 245, 329, 599, 705, 735, 987, 1645, 1797, 2303, 2995, 4193, 4935, 6909, 8985, 11515, 12579, 20965, 28153, 29351, 34545, 62895, 84459, 88053, 140765, 146755, 197071, 422295, 440265, 591213, 985355, 1379497, 2956065, 4138491, 6897485, 20692455]

約数ペア:

[(1, 20692455), (3, 6897485), (5, 4138491), (7, 2956065), (15, 1379497), (21, 985355), (35, 591213), (47, 440265), (49, 422295), (105, 197071), (141, 146755), (147, 140765), (235, 88053), (245, 84459), (329, 62895), (599, 34545), (705, 29351), (735, 28153), (987, 20965), (1645, 12579), (1797, 11515), (2303, 8985), (2995, 6909), (4193, 4935)]