21719313

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1$

素因数の和:395

約数の個数: 64

約数和(自身を含む): 41533440

約数和(自身を除く): 19814127

約数列:

[1, 3, 7, 9, 11, 21, 27, 31, 33, 63, 77, 93, 99, 189, 217, 231, 279, 297, 337, 341, 651, 693, 837, 1011, 1023, 1953, 2079, 2359, 2387, 3033, 3069, 3707, 5859, 7077, 7161, 9099, 9207, 10447, 11121, 21231, 21483, 25949, 31341, 33363, 63693, 64449, 73129, 77847, 94023, 100089, 114917, 219387, 233541, 282069, 344751, 658161, 700623, 804419, 1034253, 1974483, 2413257, 3102759, 7239771, 21719313]

約数ペア:

[(1, 21719313), (3, 7239771), (7, 3102759), (9, 2413257), (11, 1974483), (21, 1034253), (27, 804419), (31, 700623), (33, 658161), (63, 344751), (77, 282069), (93, 233541), (99, 219387), (189, 114917), (217, 100089), (231, 94023), (279, 77847), (297, 73129), (337, 64449), (341, 63693), (651, 33363), (693, 31341), (837, 25949), (1011, 21483), (1023, 21231), (1953, 11121), (2079, 10447), (2359, 9207), (2387, 9099), (3033, 7161), (3069, 7077), (3707, 5859)]