21277072

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{283}}^1$

素因数の和:455

約数の個数: 40

約数和(自身を含む): 42822656

約数和(自身を除く): 21545584

約数列:

[1, 2, 4, 8, 16, 37, 74, 127, 148, 254, 283, 296, 508, 566, 592, 1016, 1132, 2032, 2264, 4528, 4699, 9398, 10471, 18796, 20942, 35941, 37592, 41884, 71882, 75184, 83768, 143764, 167536, 287528, 575056, 1329817, 2659634, 5319268, 10638536, 21277072]

約数ペア:

[(1, 21277072), (2, 10638536), (4, 5319268), (8, 2659634), (16, 1329817), (37, 575056), (74, 287528), (127, 167536), (148, 143764), (254, 83768), (283, 75184), (296, 71882), (508, 41884), (566, 37592), (592, 35941), (1016, 20942), (1132, 18796), (2032, 10471), (2264, 9398), (4528, 4699)]