21478970

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{359}}^1$

素因数の和:590

約数の個数: 32

約数和(自身を含む): 40227840

約数和(自身を除く): 18748870

約数列:

[1, 2, 5, 10, 31, 62, 155, 193, 310, 359, 386, 718, 965, 1795, 1930, 3590, 5983, 11129, 11966, 22258, 29915, 55645, 59830, 69287, 111290, 138574, 346435, 692870, 2147897, 4295794, 10739485, 21478970]

約数ペア:

[(1, 21478970), (2, 10739485), (5, 4295794), (10, 2147897), (31, 692870), (62, 346435), (155, 138574), (193, 111290), (310, 69287), (359, 59830), (386, 55645), (718, 29915), (965, 22258), (1795, 11966), (1930, 11129), (3590, 5983)]