28136240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31973}}^1$

素因数の和:31997

約数の個数: 40

約数和(自身を含む): 71365968

約数和(自身を除く): 43229728

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 31973, 63946, 127892, 159865, 255784, 319730, 351703, 511568, 639460, 703406, 1278920, 1406812, 1758515, 2557840, 2813624, 3517030, 5627248, 7034060, 14068120, 28136240]

約数ペア:

[(1, 28136240), (2, 14068120), (4, 7034060), (5, 5627248), (8, 3517030), (10, 2813624), (11, 2557840), (16, 1758515), (20, 1406812), (22, 1278920), (40, 703406), (44, 639460), (55, 511568), (80, 351703), (88, 319730), (110, 255784), (176, 159865), (220, 127892), (440, 63946), (880, 31973)]