21878048

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{307}}^1$

素因数の和:465

約数の個数: 48

約数和(自身を含む): 46103904

約数和(自身を除く): 24225856

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 131, 136, 262, 272, 307, 524, 544, 614, 1048, 1228, 2096, 2227, 2456, 4192, 4454, 4912, 5219, 8908, 9824, 10438, 17816, 20876, 35632, 40217, 41752, 71264, 80434, 83504, 160868, 167008, 321736, 643472, 683689, 1286944, 1367378, 2734756, 5469512, 10939024, 21878048]

約数ペア:

[(1, 21878048), (2, 10939024), (4, 5469512), (8, 2734756), (16, 1367378), (17, 1286944), (32, 683689), (34, 643472), (68, 321736), (131, 167008), (136, 160868), (262, 83504), (272, 80434), (307, 71264), (524, 41752), (544, 40217), (614, 35632), (1048, 20876), (1228, 17816), (2096, 10438), (2227, 9824), (2456, 8908), (4192, 5219), (4454, 4912)]