21567199870

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1\times {\mathrm{1109}}^1$

素因数の和:1537

約数の個数: 64

約数和(自身を含む): 39896064000

約数和(自身を除く): 18328864130

約数列:

[1, 2, 5, 10, 79, 103, 158, 206, 239, 395, 478, 515, 790, 1030, 1109, 1195, 2218, 2390, 5545, 8137, 11090, 16274, 18881, 24617, 37762, 40685, 49234, 81370, 87611, 94405, 114227, 123085, 175222, 188810, 228454, 246170, 265051, 438055, 530102, 571135, 876110, 1142270, 1325255, 1944743, 2650510, 3889486, 9023933, 9723715, 18047866, 19447430, 20939029, 27300253, 41878058, 45119665, 54600506, 90239330, 104695145, 136501265, 209390290, 273002530, 2156719987, 4313439974, 10783599935, 21567199870]

約数ペア:

[(1, 21567199870), (2, 10783599935), (5, 4313439974), (10, 2156719987), (79, 273002530), (103, 209390290), (158, 136501265), (206, 104695145), (239, 90239330), (395, 54600506), (478, 45119665), (515, 41878058), (790, 27300253), (1030, 20939029), (1109, 19447430), (1195, 18047866), (2218, 9723715), (2390, 9023933), (5545, 3889486), (8137, 2650510), (11090, 1944743), (16274, 1325255), (18881, 1142270), (24617, 876110), (37762, 571135), (40685, 530102), (49234, 438055), (81370, 265051), (87611, 246170), (94405, 228454), (114227, 188810), (123085, 175222)]