21012197904

素因数分解:

$2^4\times 3^3\times {\mathrm{839}}^1\times {\mathrm{57973}}^1$

素因数の和:58829

約数の個数: 80

約数和(自身を含む): 60385718400

約数和(自身を除く): 39373520496

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, 432, 839, 1678, 2517, 3356, 5034, 6712, 7551, 10068, 13424, 15102, 20136, 22653, 30204, 40272, 45306, 57973, 60408, 90612, 115946, 120816, 173919, 181224, 231892, 347838, 362448, 463784, 521757, 695676, 927568, 1043514, 1391352, 1565271, 2087028, 2782704, 3130542, 4174056, 6261084, 8348112, 12522168, 25044336, 48639347, 97278694, 145918041, 194557388, 291836082, 389114776, 437754123, 583672164, 778229552, 875508246, 1167344328, 1313262369, 1751016492, 2334688656, 2626524738, 3502032984, 5253049476, 7004065968, 10506098952, 21012197904]

約数ペア:

[(1, 21012197904), (2, 10506098952), (3, 7004065968), (4, 5253049476), (6, 3502032984), (8, 2626524738), (9, 2334688656), (12, 1751016492), (16, 1313262369), (18, 1167344328), (24, 875508246), (27, 778229552), (36, 583672164), (48, 437754123), (54, 389114776), (72, 291836082), (108, 194557388), (144, 145918041), (216, 97278694), (432, 48639347), (839, 25044336), (1678, 12522168), (2517, 8348112), (3356, 6261084), (5034, 4174056), (6712, 3130542), (7551, 2782704), (10068, 2087028), (13424, 1565271), (15102, 1391352), (20136, 1043514), (22653, 927568), (30204, 695676), (40272, 521757), (45306, 463784), (57973, 362448), (60408, 347838), (90612, 231892), (115946, 181224), (120816, 173919)]