2189900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:434

約数の個数: 36

約数和(自身を含む): 4843440

約数和(自身を除く): 2653540

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 359, 610, 718, 1220, 1436, 1525, 1795, 3050, 3590, 6100, 7180, 8975, 17950, 21899, 35900, 43798, 87596, 109495, 218990, 437980, 547475, 1094950, 2189900]

約数ペア:

[(1, 2189900), (2, 1094950), (4, 547475), (5, 437980), (10, 218990), (20, 109495), (25, 87596), (50, 43798), (61, 35900), (100, 21899), (122, 17950), (244, 8975), (305, 7180), (359, 6100), (610, 3590), (718, 3050), (1220, 1795), (1436, 1525)]