21390688

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{907}}^1$

素因数の和:995

約数の個数: 48

約数和(自身を含む): 46678464

約数和(自身を除く): 25287776

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 67, 88, 134, 176, 268, 352, 536, 737, 907, 1072, 1474, 1814, 2144, 2948, 3628, 5896, 7256, 9977, 11792, 14512, 19954, 23584, 29024, 39908, 60769, 79816, 121538, 159632, 243076, 319264, 486152, 668459, 972304, 1336918, 1944608, 2673836, 5347672, 10695344, 21390688]

約数ペア:

[(1, 21390688), (2, 10695344), (4, 5347672), (8, 2673836), (11, 1944608), (16, 1336918), (22, 972304), (32, 668459), (44, 486152), (67, 319264), (88, 243076), (134, 159632), (176, 121538), (268, 79816), (352, 60769), (536, 39908), (737, 29024), (907, 23584), (1072, 19954), (1474, 14512), (1814, 11792), (2144, 9977), (2948, 7256), (3628, 5896)]