21747495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{991}}^1$

素因数の和:1036

約数の個数: 64

約数和(自身を含む): 45711360

約数和(自身を除く): 23963865

約数列:

[1, 3, 5, 7, 11, 15, 19, 21, 33, 35, 55, 57, 77, 95, 105, 133, 165, 209, 231, 285, 385, 399, 627, 665, 991, 1045, 1155, 1463, 1995, 2973, 3135, 4389, 4955, 6937, 7315, 10901, 14865, 18829, 20811, 21945, 32703, 34685, 54505, 56487, 76307, 94145, 104055, 131803, 163515, 207119, 228921, 282435, 381535, 395409, 621357, 659015, 1035595, 1144605, 1449833, 1977045, 3106785, 4349499, 7249165, 21747495]

約数ペア:

[(1, 21747495), (3, 7249165), (5, 4349499), (7, 3106785), (11, 1977045), (15, 1449833), (19, 1144605), (21, 1035595), (33, 659015), (35, 621357), (55, 395409), (57, 381535), (77, 282435), (95, 228921), (105, 207119), (133, 163515), (165, 131803), (209, 104055), (231, 94145), (285, 76307), (385, 56487), (399, 54505), (627, 34685), (665, 32703), (991, 21945), (1045, 20811), (1155, 18829), (1463, 14865), (1995, 10901), (2973, 7315), (3135, 6937), (4389, 4955)]