20553828

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{653}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 49955136

約数和(自身を除く): 29401308

約数列:

[1, 2, 3, 4, 6, 12, 43, 61, 86, 122, 129, 172, 183, 244, 258, 366, 516, 653, 732, 1306, 1959, 2612, 2623, 3918, 5246, 7836, 7869, 10492, 15738, 28079, 31476, 39833, 56158, 79666, 84237, 112316, 119499, 159332, 168474, 238998, 336948, 477996, 1712819, 3425638, 5138457, 6851276, 10276914, 20553828]

約数ペア:

[(1, 20553828), (2, 10276914), (3, 6851276), (4, 5138457), (6, 3425638), (12, 1712819), (43, 477996), (61, 336948), (86, 238998), (122, 168474), (129, 159332), (172, 119499), (183, 112316), (244, 84237), (258, 79666), (366, 56158), (516, 39833), (653, 31476), (732, 28079), (1306, 15738), (1959, 10492), (2612, 7869), (2623, 7836), (3918, 5246)]