21837950

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 42723456

約数和(自身を除く): 20885506

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 73, 146, 155, 193, 310, 365, 386, 730, 775, 965, 1550, 1825, 1930, 2263, 3650, 4526, 4825, 5983, 9650, 11315, 11966, 14089, 22630, 28178, 29915, 56575, 59830, 70445, 113150, 140890, 149575, 299150, 352225, 436759, 704450, 873518, 2183795, 4367590, 10918975, 21837950]

約数ペア:

[(1, 21837950), (2, 10918975), (5, 4367590), (10, 2183795), (25, 873518), (31, 704450), (50, 436759), (62, 352225), (73, 299150), (146, 149575), (155, 140890), (193, 113150), (310, 70445), (365, 59830), (386, 56575), (730, 29915), (775, 28178), (965, 22630), (1550, 14089), (1825, 11966), (1930, 11315), (2263, 9650), (3650, 5983), (4526, 4825)]