21787236

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1$

素因数の和:589

約数の個数: 72

約数和(自身を含む): 58476600

約数和(自身を除く): 36689364

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 41, 58, 82, 87, 116, 123, 164, 174, 246, 261, 348, 369, 492, 509, 522, 738, 1018, 1044, 1189, 1476, 1527, 2036, 2378, 3054, 3567, 4581, 4756, 6108, 7134, 9162, 10701, 14268, 14761, 18324, 20869, 21402, 29522, 41738, 42804, 44283, 59044, 62607, 83476, 88566, 125214, 132849, 177132, 187821, 250428, 265698, 375642, 531396, 605201, 751284, 1210402, 1815603, 2420804, 3631206, 5446809, 7262412, 10893618, 21787236]

約数ペア:

[(1, 21787236), (2, 10893618), (3, 7262412), (4, 5446809), (6, 3631206), (9, 2420804), (12, 1815603), (18, 1210402), (29, 751284), (36, 605201), (41, 531396), (58, 375642), (82, 265698), (87, 250428), (116, 187821), (123, 177132), (164, 132849), (174, 125214), (246, 88566), (261, 83476), (348, 62607), (369, 59044), (492, 44283), (509, 42804), (522, 41738), (738, 29522), (1018, 21402), (1044, 20869), (1189, 18324), (1476, 14761), (1527, 14268), (2036, 10701), (2378, 9162), (3054, 7134), (3567, 6108), (4581, 4756)]