21153055

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 33094656

約数和(自身を除く): 11941601

約数列:

[1, 5, 7, 11, 35, 47, 49, 55, 77, 167, 235, 245, 329, 385, 517, 539, 835, 1169, 1645, 1837, 2303, 2585, 2695, 3619, 5845, 7849, 8183, 9185, 11515, 12859, 18095, 25333, 39245, 40915, 54943, 64295, 86339, 90013, 126665, 274715, 384601, 431695, 450065, 604373, 1923005, 3021865, 4230611, 21153055]

約数ペア:

[(1, 21153055), (5, 4230611), (7, 3021865), (11, 1923005), (35, 604373), (47, 450065), (49, 431695), (55, 384601), (77, 274715), (167, 126665), (235, 90013), (245, 86339), (329, 64295), (385, 54943), (517, 40915), (539, 39245), (835, 25333), (1169, 18095), (1645, 12859), (1837, 11515), (2303, 9185), (2585, 8183), (2695, 7849), (3619, 5845)]