19935784

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2243}}^1$

素因数の和:2361

約数の個数: 32

約数和(自身を含む): 41199840

約数和(自身を除く): 21264056

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2222, 2243, 4444, 4486, 8888, 8972, 17944, 24673, 49346, 98692, 197384, 226543, 453086, 906172, 1812344, 2491973, 4983946, 9967892, 19935784]

約数ペア:

[(1, 19935784), (2, 9967892), (4, 4983946), (8, 2491973), (11, 1812344), (22, 906172), (44, 453086), (88, 226543), (101, 197384), (202, 98692), (404, 49346), (808, 24673), (1111, 17944), (2222, 8972), (2243, 8888), (4444, 4486)]