19821538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{911}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 14849054

約数列:

[1, 2, 11, 22, 23, 43, 46, 86, 253, 473, 506, 911, 946, 989, 1822, 1978, 10021, 10879, 20042, 20953, 21758, 39173, 41906, 78346, 230483, 430903, 460966, 861806, 900979, 1801958, 9910769, 19821538]

約数ペア:

[(1, 19821538), (2, 9910769), (11, 1801958), (22, 900979), (23, 861806), (43, 460966), (46, 430903), (86, 230483), (253, 78346), (473, 41906), (506, 39173), (911, 21758), (946, 20953), (989, 20042), (1822, 10879), (1978, 10021)]