20294944

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 41856696

約数和(自身を除く): 21561752

約数列:

[1, 2, 4, 8, 16, 32, 37, 61, 74, 122, 148, 244, 281, 296, 488, 562, 592, 976, 1124, 1184, 1952, 2248, 2257, 4496, 4514, 8992, 9028, 10397, 17141, 18056, 20794, 34282, 36112, 41588, 68564, 72224, 83176, 137128, 166352, 274256, 332704, 548512, 634217, 1268434, 2536868, 5073736, 10147472, 20294944]

約数ペア:

[(1, 20294944), (2, 10147472), (4, 5073736), (8, 2536868), (16, 1268434), (32, 634217), (37, 548512), (61, 332704), (74, 274256), (122, 166352), (148, 137128), (244, 83176), (281, 72224), (296, 68564), (488, 41588), (562, 36112), (592, 34282), (976, 20794), (1124, 18056), (1184, 17141), (1952, 10397), (2248, 9028), (2257, 8992), (4496, 4514)]