21804810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:463

約数の個数: 64

約数和(自身を含む): 55054080

約数和(自身を除く): 33249270

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 71, 87, 142, 145, 174, 213, 290, 353, 355, 426, 435, 706, 710, 870, 1059, 1065, 1765, 2059, 2118, 2130, 3530, 4118, 5295, 6177, 10237, 10295, 10590, 12354, 20474, 20590, 25063, 30711, 30885, 50126, 51185, 61422, 61770, 75189, 102370, 125315, 150378, 153555, 250630, 307110, 375945, 726827, 751890, 1453654, 2180481, 3634135, 4360962, 7268270, 10902405, 21804810]

約数ペア:

[(1, 21804810), (2, 10902405), (3, 7268270), (5, 4360962), (6, 3634135), (10, 2180481), (15, 1453654), (29, 751890), (30, 726827), (58, 375945), (71, 307110), (87, 250630), (142, 153555), (145, 150378), (174, 125315), (213, 102370), (290, 75189), (353, 61770), (355, 61422), (426, 51185), (435, 50126), (706, 30885), (710, 30711), (870, 25063), (1059, 20590), (1065, 20474), (1765, 12354), (2059, 10590), (2118, 10295), (2130, 10237), (3530, 6177), (4118, 5295)]