21821954

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{653}}^1$

素因数の和:711

約数の個数: 48

約数和(自身を含む): 42944256

約数和(自身を除く): 21122302

約数列:

[1, 2, 7, 11, 14, 22, 31, 49, 62, 77, 98, 154, 217, 341, 434, 539, 653, 682, 1078, 1306, 1519, 2387, 3038, 4571, 4774, 7183, 9142, 14366, 16709, 20243, 31997, 33418, 40486, 50281, 63994, 100562, 141701, 222673, 283402, 351967, 445346, 703934, 991907, 1558711, 1983814, 3117422, 10910977, 21821954]

約数ペア:

[(1, 21821954), (2, 10910977), (7, 3117422), (11, 1983814), (14, 1558711), (22, 991907), (31, 703934), (49, 445346), (62, 351967), (77, 283402), (98, 222673), (154, 141701), (217, 100562), (341, 63994), (434, 50281), (539, 40486), (653, 33418), (682, 31997), (1078, 20243), (1306, 16709), (1519, 14366), (2387, 9142), (3038, 7183), (4571, 4774)]