21196400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2789}}^1$

素因数の和:2826

約数の個数: 60

約数和(自身を含む): 53623800

約数和(自身を除く): 32427400

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 2789, 3800, 5578, 7600, 11156, 13945, 22312, 27890, 44624, 52991, 55780, 69725, 105982, 111560, 139450, 211964, 223120, 264955, 278900, 423928, 529910, 557800, 847856, 1059820, 1115600, 1324775, 2119640, 2649550, 4239280, 5299100, 10598200, 21196400]

約数ペア:

[(1, 21196400), (2, 10598200), (4, 5299100), (5, 4239280), (8, 2649550), (10, 2119640), (16, 1324775), (19, 1115600), (20, 1059820), (25, 847856), (38, 557800), (40, 529910), (50, 423928), (76, 278900), (80, 264955), (95, 223120), (100, 211964), (152, 139450), (190, 111560), (200, 105982), (304, 69725), (380, 55780), (400, 52991), (475, 44624), (760, 27890), (950, 22312), (1520, 13945), (1900, 11156), (2789, 7600), (3800, 5578)]