21403888

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{3923}}^1$

素因数の和:3973

約数の個数: 40

約数和(自身を含む): 46711296

約数和(自身を除く): 25307408

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 176, 248, 341, 496, 682, 1364, 2728, 3923, 5456, 7846, 15692, 31384, 43153, 62768, 86306, 121613, 172612, 243226, 345224, 486452, 690448, 972904, 1337743, 1945808, 2675486, 5350972, 10701944, 21403888]

約数ペア:

[(1, 21403888), (2, 10701944), (4, 5350972), (8, 2675486), (11, 1945808), (16, 1337743), (22, 972904), (31, 690448), (44, 486452), (62, 345224), (88, 243226), (124, 172612), (176, 121613), (248, 86306), (341, 62768), (496, 43153), (682, 31384), (1364, 15692), (2728, 7846), (3923, 5456)]