21230265

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{149}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 20241735

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 59, 69, 105, 115, 149, 161, 177, 295, 345, 413, 447, 483, 745, 805, 885, 1043, 1239, 1357, 2065, 2235, 2415, 3129, 3427, 4071, 5215, 6195, 6785, 8791, 9499, 10281, 15645, 17135, 20355, 23989, 26373, 28497, 43955, 47495, 51405, 61537, 71967, 119945, 131865, 142485, 184611, 202193, 307685, 359835, 606579, 923055, 1010965, 1415351, 3032895, 4246053, 7076755, 21230265]

約数ペア:

[(1, 21230265), (3, 7076755), (5, 4246053), (7, 3032895), (15, 1415351), (21, 1010965), (23, 923055), (35, 606579), (59, 359835), (69, 307685), (105, 202193), (115, 184611), (149, 142485), (161, 131865), (177, 119945), (295, 71967), (345, 61537), (413, 51405), (447, 47495), (483, 43955), (745, 28497), (805, 26373), (885, 23989), (1043, 20355), (1239, 17135), (1357, 15645), (2065, 10281), (2235, 9499), (2415, 8791), (3129, 6785), (3427, 6195), (4071, 5215)]