21780176

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{2633}}^1$

素因数の和:2699

約数の個数: 40

約数和(自身を含む): 47032704

約数和(自身を除く): 25252528

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 47, 88, 94, 176, 188, 376, 517, 752, 1034, 2068, 2633, 4136, 5266, 8272, 10532, 21064, 28963, 42128, 57926, 115852, 123751, 231704, 247502, 463408, 495004, 990008, 1361261, 1980016, 2722522, 5445044, 10890088, 21780176]

約数ペア:

[(1, 21780176), (2, 10890088), (4, 5445044), (8, 2722522), (11, 1980016), (16, 1361261), (22, 990008), (44, 495004), (47, 463408), (88, 247502), (94, 231704), (176, 123751), (188, 115852), (376, 57926), (517, 42128), (752, 28963), (1034, 21064), (2068, 10532), (2633, 8272), (4136, 5266)]